I has once before made it very clear to a player that I thought he was acting unsportsmanlike, but I had no evidence. It was a type of action that would warrant an ejection. The player's look was that he was busted, but go away with one. I didn't go to the extreme that this official went to, but the emotions in a top-level D1 game are among the most intense possible - even moreso than some NFL games.
I'd like to know what force caused the ref to almost fall over. Somebody hit him (by accident I'm sure) but had the red player not been there, it's quite possible that the ref would have been knocked to the ground.
I don't see myself doing something like this, but the games I do so rarely send players to the NFL and only 85 people are in attendance.