Cj Walker was a Purdue commit. When his cousin Ronnie Johnson "transferred" from the team (Painter essentially encouraged Ronnie to leave because the kid refused to be taught how to not drive into three defenders for a turnover) Ronnie encouraged CJ to decommit. There was alot of bluster about how "CJ has too much 'sauce' to play for a school like Purdue."
CJ ended up going to FSU and apparently found out he wasn't nearly as good as he thought he was so he ended up transferring out when it was obvious he was never going to be the star there.
Strangely enough, after Ronnie left, the Purdue offense started being significantly better and has been one of the most efficient in the nation the past three years. For all I know, the kid might not be the head case that the Purdue fans make him out to be and that it was mostly Ronnie conflating the situation, but the damage is already done. Knowing our home crowd, the kid will be lucky to get out of Mackey without at least one can of Hunts being thrown at him.