Grands Crus still has the Ladbrokes World Hurdle and Ryanair Chase as his possible Cheltenham Festival targets as the grey recovers from an ulcer problem.
Third in the King George VI Chase after having a breathing operation, the eight-year-old ran poorly once again when pulled up in the Argento Chase at Cheltenham last month.
Trainer David Pipe told his website: "He was given an easy time of things after his race while we tried to get to the bottom of his lacklustre effort and he is now being treated for gastric ulcers."
He added: "He is back on the gallops and looks well in himself so I will need to speak with his owners and decide the plan of action.
"Tomorrow (Tuesday) there is a forfeit stage for the Gold Cup, Ryanair Chase and World Hurdle and I can inform you that he will be scratched from the Gold Cup but will be left in both the Ryanair Chase and World Hurdle."
Pipe's horses ran well all weekend and he confirmed Swing Bowler could be given the option of the Vincent O'Brien County Hurdle after her fine effort behind My Tent Or Yours in the Betfair Hurdle at Newbury.
His two Exeter winners, Vieux Lion Rouge and The Liquidator, are in contention for the Champion Bumper, while Broadway Buffalo remains unbeaten after his hurdling debut at Newcastle.
Pipe said of Broadway Buffalo: "His jumping improved as the race went on and by the time they reached the long Newcastle straight he was pinging his hurdles.
"With the right horses coming to the forefront, the way in which he comfortably drew 17 lengths clear of his rivals bodes well for the future.
"He is entered in the Neptune Investment Hurdle and the Albert Bartlett at next month's Cheltenham Festival."
22 May 2015Gleneagles tees off at Curragh
Stars dazzles at Goodwood
Dettori receives golden ticket
Paris in Sandown shake-up
Tudhope suffers Haydock blow
Gatsby in great form for Gold run
O'Brien banking on Found progress
Ivawood targets Guineas revenge
Sole seeking home success
Brooch aiming to sparkle again
Dods hoping Angel can soar
Remote makes Festival return
Force back for Temple test
Cumani hangs fire as Dubai dazzles
Dods hoping for Angel delight
Epicuris team seek dispensation
Treve buzzing for Corrida comeback
No going concerns for Gatsby
Gleneagles spearheads Guineas field
Power to stay in Ireland
Muthmir earmarked for Haydock date
21 May 2015Ground concerns for Pretend
Ball back on duty at Worcester
Ground key to Boy Gold run
Fitz up against it for Galway
Hobbs to race in Godolphin blue
Haggas has plenty to Wonder about
Straight to Ascot for Rizeena
Curragh all set for big weekend
Byron in Greenlands hunt
Sandown or Epsom options for Spring
O'Brien looks to Tapestry
Europe the 'horse of a lifetime'
Legatissimo in Oaks reckoning
20 May 2015Top fillies given Irish Derby entry
Girl could spark Ascot dreams
Coolmore acquire Pharoah rights
Cirrus leads Longchamp septet
Time called on Europe career
Doyle set for Kazeem Gold run
RMG and ARC announce joint venture
Lyons planning dual Guineas raid
Albany aim for Spanish
Maarek team wait on ground
Birdcage takes flight at Dundalk
Gatsby tops Tattersalls entry
Great expectations in Needler
Karakontie likely to bypass Ascot
Devonshire added to Guineas field
Arod in Ascot frame
Elm team have high hopes
Varian retains Belardo faith
Ground to decide Power aim
19 May 2015Fanning targets swift return
Medrano camp turn to Hughes
Cossack named jumps champion
Toormore team get thinking caps on
Bear back on the move
Wind fired up for Temple test
Ballynagour makes French connection
Walker retains faith in Moon
Mimic in hat for Yeardley surge
Manhattan on menu for Protector
Pandora to swerve Oaks
Hannon duo primed for Guineas
Fabre rules out Lion Derby date
Weld respects Horn claims