I'm thinking the low scores are on purpose, but not because he pissed off TPTB.
With his injury list growing each week, they probably see him as a liability and would rather he left now, than before he injured himself to the point of not being able to walk or something worse. Which would reflect horribly on the show and they either lose their "stars" or the show all together. Not because of the liability factor but because no one would want to do it.
Hence the reason I think the judges gave him the low scores, to kind of push him out of the competition before anything else happens to him. Because he doesn't appear to want to leave on his own, which is fine, but his body is telling him something and he's not listening.