Let's also not forget the straw that broke the camels back. Crist did more than hug Obama. Republicans abandoned him after he vetoed school reform bills at the bidding of the teacher's unions.
The same Jeb Bush education reform bills that even Chris Matthews whole-heartedly endorses. And the man doesn't actually like unions or anything (if the rest of his tenure shows), he was just an asshole opportunist looking for any kind of support (and the teacher's unions were just convenient). Kind of like that other grade-A asshole, Lincoln Chaffee.
And that veto is why he's a massive FF.