John Randle was a psycho on the field, but never had any off field trouble that I can recall.
Then there's Charles Haley, who o don't recall doing anything criminal but who often seriously freaked out his own teammates in the locker room.
Ray Rhodes used a massively profane tirade to motivate his Eagles squad to a victory in his first season as a coach. Lots of folks thought he had a great future ahead after that.
Didn't pan out, though.
I remember, I think it was Damione Lewis, saying "When you first meet him, you think to yourself "He might be a little off". After you work with him, spend time with him and get to know him though, you say, "Yeah, he's a little off"
That was my initial reaction.
It was also Lady Cowboy Fan's first response. And I should be clear that, despite being a Cowboy fan, she never swears (not even at Jerry Jones).
But I'm not sure if that would be everybody's opinion