If you watch the video (maybe you did and perceived it differently) he sucker punched both players in the back of their heads well after the whistle had blown and they had turned back to the field. They hadn’t visibly taunted anyone, or done anything other than what you see on any play that goes out of bounds and into the bench. Frankly, I’ve never seen anyone on a sideline do anything like this. Even Woody Hayes could be said to have been provoked by the Clemson player taunting the OSU bench (he was fired the very next day for that last loss of temper). And at least he put his 70 year old forearm into the guy’s chin from the front. This was just a pair of plain old cowardly and unprovoked sucker punches.
With their helmets on I'll wager they didn't even notice.........