All I'm saying is he's widely known in the sport to fake injury both inside and outside the ring - He wasn't getting anywhere in the fight, and was approaching the later rounds which at that point he was tiring and he didn't want (being a stone heavier than his opponent).
Is not not WITHIN THE REALMS OF POSSIBILITY he pretended his ankle was worse than it was, especially seeing as he left hospital with no further treatment required? To both keep and further his reputation by fighting on through a 'torn Achilles'? He isn't a loser in the eyes of the public because he soldiered on in the face of this massive adversity. Plus he gets his lucrative rematch, which he was quite insistent on after the bell.
Maybe just maybe??