I can't tell on rewatch. Based on the timing of Duane's tweets and what he said the score was, it was after a good stretch by Ayton...alley oop finish, fight for a rebound on other end, another alley oop (he did hang on the rim a bit, but not as long as others have0 and then that block where he got called a foul (it did seem kind of a a weak foul..crowd was booing)...he did say something to someone after that foul..looked like he was just normally talking..not sure if it was ref or teammate..you couldn't see other person. Then at other end he got a pass down low and was intentionally fouled...after he was intentionally fouled he was taken out.
I didn't see anything that happened on the court that could have pissed him off or been worth talking to him about...and I couldn't see him being pissed because there was a long time after he went out that the ball was on the OKC end...by the time I could see he was sitting down....a few minutes later he was talking to Bridges.
It may have been that he had a nice stretch, finish, contested rebound, finish, block, gets pass an intentional foul, pulled out...he may have just been made he got pulled out while he was playing really well.