As TUBla says, this has been well documented on this site.
BLA's version sounds like two stories combined into one. Milton told his teammates that he didn't want to go to a school that treats the students like they're stupid. His friend and former teammate felt that he had been treated poorly by the university. This was academic related, not athletics.
Lowe is on record as saying that he "just wasn't happy at TU". I don't if this was due to athletics, academics, or a combination of the two. He did seem to have a big impact on Shake's decision, but again it was for academic reasons.
I'm still interested to hear what he said that bashed TU. I guess I must have missed that one.
On a side note, the TW article seemed to imply that Shake may forego his final year of eligibility if he is projected as a 1st round draft pick. Is that even a possibility? He does remind me a little bit of a young Victor Oladipo, minus the singing voice.