Paul Nicholls admitted his "sadness" after Kauto Star's time at his Ditcheat yard came to an abrupt end on Tuesday.
The superstar's owner Clive Smith had announced on Monday that the 12-year-old would be moving away to be prepared by European bronze medalist eventing rider Laura Collett and long-time Great Britain manager and coach Yogi Breisner for a new career in the world of dressage - a decision not popular with Nicholls and his staff.
The winner of 19 races for the champion trainer, including four Betfair Chases and two Tingle Creeks, Kauto Star had been with Nicholls for eight years and was invariably ridden by his head lad Clifford Baker.
Nicholls told his Betfair column: "It is with great sadness that I have to report that Kauto Star has left the yard for the last time. It has been no secret that Kauto's future has been a great source of debate since we announced his retirement. And, to be brutally honest, this morning I felt the time had finally come for me to take control of the situation, and to start making the decisions.
"Now, I am fully aware that Kauto is Clive's horse and he can do as he wishes, even though I would personally have loved Clifford to have looked after him for the rest of his years. But what upset me and my team here is when Clive announced that he had spoken to experts about the horse's future - but failed to consult and listen properly to the team that had looked after him here for the past nine years. That really upset us."
Nicholls went on: "So we had a team meeting here this morning. And after listening to everybody involved - there were about six of us in the meeting - I rang up Clive, said I don't want to fall out, but we think it is in the best interests of everybody concerned to take Kauto to Yogi Breisner's this afternoon so that he could start his new career in the dressage field as soon as possible.
"Which we did with the saddest of hearts. But I like to think with a lot of dignity, too. And, yes, there were plenty of tears too. He was a member of the family here at Ditcheat, and we will all miss him so much. I would just to like say that it was a privilege for us here at Ditcheat to train the horse. Good luck, old boy. You were the best - and deserve the best."
Collett, 22, who is an aspiring Olympian based at the Membury Estate in Wiltshire, tweeted: "I feel very privileged and extremely honoured to have been asked to ride Kauto Star. I will be working closely with Yogi to give Kauto Star the best chance of a second career in dressage."
She added: "Kauto Star has arrived safe and sound. Had a nice roll, now happily munching on his hay!"
Collett also revealed she had spoken to Paul Nicholls to reassure him about Kauto Star and tweeted: ""Just had a lovely chat with @PFNicholls about Kauto Star...I have reassured him Kauto will be treated like the legend he is...".
5 December 2016Uttoxeter forced to check due to threat of frost
Taquin Du Seuil tops 19 contenders hunting Caviar Gold
James Moffatt hoping Highland Lodge effort will secure National date
Kim Bailey considers Cheltenham test for Charbel
Many Clouds Lexus bid under serious consideration from Oliver Sherwood
Smad Place lined up for Cotswold repeat by Alan King
The Last Samuri to tread a familiar path back to Aintree
Peter Maher takes double aim at Cross Country Chase
Ludlow frozen off
Oscar-winning performance delights Fergal O'Brien
Eddie Harty has long-term dreams for Coney Island after Drinmore glory
'Excellent' Josses Hill puts it all together in Peterborough Chase romp
Apple's Jade pips Vroum Vroum Mag in Hatton's Grace thriller
Prolific Airlie Beach bags Grade One glory in Royal Bond
Ar Mad in line to be supplemented for the King George at Kempton
Landofhopeandglory still unbeaten over hurdles after Fairyhouse battle
Ballyandy providing Nigel Twiston-Davies with campaign quandary
Yanworth enters International and Christmas reckoning
4 December 2016Gordon Elliottt eyeing Leopardstown outing for Ucello Conti
Stuart Edmunds eyeing Ascot compensation for Wolf Of Windlesham
Ludlow call precautionary check
Kelso gets the go-ahead
As De Mee gives owner Dame Judi Dench a winner over the National fences
Un De Sceaux just betters Sire De Grugy in Tingle Creek epic
National hero Many Clouds back in business at Aintree
Kempton the next stop as Altior bandwagon gathers pace at Sandown
Vieux Lion Rouge denies Highland Lodge repeat success in Becher thriller
Cole Harden second on fencing debut as Its'afreebee comes out on top
Unbeaten Airlie Beach seeking Grade One gold in Royal Bond
Vroum Vroum Mag revved up for Hatton's Grace at Fairyhouse
Mouse Morris gives Alpha Des Obeaux a squeak in Fairyhouse Grade One
3 December 2016Evening Hush makes big noise at Aintree
BHA withdraws disciplinary charges against Martin Harley
Festival winner Martello Tower off the mark over fences at Fairyhouse
Triumph Hurdle favourite Landofhopeandglory faces Fairyhouse test
More Of That on recovery mission in Peterborough Chase
Precautionary inspection for Kelso Sunday fixture
Waitaki gives Pat Smullen a winning send off at Dundalk
Classy Messire Des Obeaux fires for Alan King at Sandown
The New One set to take on International Hurdle assignment
Faugheen earmarked for Christmas comeback
Oliver Sherwood 'very happy' as National winner Many Clouds returns to Aintree
Noel Fehily bowled over by Sandown-bound Altior
National king Mouse Morris on Aintree reconnaissance mission with Rogue Angel
Vroum Vroum Mag leads Hatton's Grace team for Willie Mullins
Ground poser as Un De Sceaux takes Tingle Creek test at Sandown
Henry de Bromhead has John Durkan target for Sub Lieutenant
2 December 2016Joseph O'Brien claims Dundalk success for Qatar Racing
More Buck's in the money at Sandown
Classy Messire Des Obeaux fires for Alan King at Sandown
Alan King rules at Sandown with Messire Des Obeaux
Exeter Friday card falls victim to frost
No problems for day one of Tingle Creek meeting at Sandown
Crafty Roberto back to winning ways at Market Rasen
Highland Lodge geared up for Becher repeat
Hilly Way beckons for Douvan as Un De Sceaux picks up Tingle Creek gauntlet
Arctic Skipper angling for Lexus honours at Leopardstown
Tully East makes perfect start as Bachasson falters at Thurles
'Big day' for The New One as chasing bow beckons at Exeter
Coeur Blimey makes hurdling debut at Sandown for Sue Gardner
Trevor Whelan withdraws appeal against Leicester suspension
Native River to have light campaign before Gold Cup