I was at the game Friday. He sat at the far end of the bench, wasn't interacting with the team too much. Had a back brace on when he wasn't on the floor. During the second half he looked to be in some discomfort - his right arm hanging limp several times. He did have a chase down block that lead to a steal to a breakaway dunk that got the crowd on their feet...
Fantastic update for those who can't go and see in person. Shows how watching live (and reading boxscores) doesn't show everything. If he's wearing a back brace during breaks it's likely the whole league knows he's playing through a lot of pain right now.