Back in the first couple of years, Brian Kelly was bitching at the players, and especially attacking the veteran players.
During one team meeting, he all but shouted out about how he knew who "his" players were, and who the players "the other guy left behind" were.
Instead of uniting the team, he came ever so close to fracturing it, since Manti Teo was legitimately pissed at Kelly's comments, and that the team had been busting its collective butt for him.
It wasn't until Teo actually posted something about how after that meeting, he was now playing for the sake of his teammates, the fans, and himself, and not for Kelly. That actually caused Brian Kelly to give a half-assed apology for that divisive speech.