The story is that his twitter account got hacked and his agent claims they claim they know who did it.
Regardless, if you look at his tweets, he doesn't talk like that on Twitter so I highly doubt he was the one who sent that tweet.
I listened to his press conference. He sounded nervous and seems to have a bit of a studder but otherwise seems very well spoken.
Not that I don't believe college players at those big time schools get money but who would be stupid enough to tweet about it. Fluker doesn't come off to be foolish like that.