You are about where I am with this. Rather hard to get a clear view of the puzzle when most of the pieces are missing. Right now we are scuffling around following rumors, hearsay and vague hypotheses.I have no real idea. But, I presume that he was strict. I am not sure if I would call it too strict. Rolovich inherited players from Chow. That he suspended them, I think says he was strict. I find it hard to believe that a coach would resign because he believed the head coach was too lenient and should have been harsher.
I could see a coach upset that players he liked, and perhaps recruited, were being what he thought were unfairly punished.