I played ball on the Ontario team with Tristan back in grade eight. Used to be a chubby 5'10", now he's a lanky 6'8". It's crazy when I think about it really - he was good when I played with him, but I don't think anyone ever labeled him top three recruit in North America good. Kid verbally agreed to play with Texas in grade 11. Grade 11!
To be honest it doesn't surprise me that he didn't mesh well with a hard ass of a coach. Not to say he was a bitch, because the coach he played with in Brampton was a pseudo drill sergeant, but after having everything handed to you for your whole basketball career it's tough to adapt. Realistically though he'll be in the NBA in a couple years no matter which pretentious preparatory high school recruits him.
Wish him the best though, he's a good guy. Was just talking to him on facebook over the christmas break actually.