I'm going to run with the idea that Obekpa did NOT refuse to go into the game yesterday, despite the fact that I was told that there was some sort of argument on the bench.
Having said that, if any kid on any team I ever coached would refuse to go into a game as important as yesterday's, with the whole season hanging in the balance, other than for injury - I'd be done with that kid forever. I don't care if it was Chris Mullin.
There is a great friend of mine who coached HS ball for years. A long time ago, Scottie Pippen refused to go into a game because the Bulls mapped the last shot for Toni Kukoc (who incidentally made the shot). the next NCAA season a player on Providence, God Shamgod, mimicked an NBA player by doing the exact same thing. I causally asked this coach what he would do if one of his players did the same. He decidedly said it wouldn't happen. I pressed him and said, I'm not asking if it would happen, I'm asking what you would do if it did happen. He got a little angrier, and said "I SAID it wouldn't happen." So I pressed and clarified myself saying "How could you say it would never happen?. It did, just twice in the last few months, in the NBA and college?" His response, now red faced and angry, "Cuz I'd stick his head in a toilet if he tried that." I laughed at his answer, and still mad he said "You think I haven't done that before?" Old school.