Brandon Triche - Classic introvert. ALWAYS in his head. Even when he is playing at a high level, he is still in his head. I know because I am an introvert as well. I know his type.
For everybody who wants to know what goes on in his head, my best guess is something like this: "OK, coach is watching I got to do good at right now, ok I have the ball right now, I'm just going to give it to MCW, OK he passed it back, you know what, I'm a senior, I'm a leader, I'm going to show these guys how it's done." Then he goes off for 20. Then he gets in his head about something negative and he stops believing in himself. Classic negative expectation grid.
I've seen people in real life who are like this and gotten out of this loop, but it is very difficult. People who don't have experience with this do not understand people like Triche, which is why Boeheim is so bewildered by him. Triche can be an All-American, he could be in the NBA already, but instead he is here and will probably be in Europe next year, playing the same exact way.
So what should we expect? I don't see him breaking out of this positive thought/negative thought loop so we need other leaders on this team, which we luckily have in MCW. We cannot always count on him to step up, he will step up whenever he steps up (if that makes sense) so we should never 100% lean on Triche. But when he is playing good, we need to milk that to the fullest.