Soreness is costly! The reluctant horse can run with a painkiller, BUT the pain itself avoids the SPEED which is causing MORE damage. The horse will NOT run much due to pain. Your bet is going down the drain by pain, not by the brakes nor by shortness of breath. USUALLY, the horse that has bucked is kept in training when it should be walked with phenylbutazone until the pain is gone. What does the vet say?