I've ref'd plenty of basketball games. All the ref had to do was race up the court. If Collins makes contact with him on the way up, then it's a T. There was nothing that I saw the ref do in that exchange that he should have done. Literally nothing.
I think I agree with you, Mikewebb68. Personally, I would not have charged out onto the court -- but that’s because of my personality. I would have thrown the most outrageous sideline tantrum ever seen in modern times, because by that point in the game (2nd apparent blown goaltending call, huge FT differential for Zags, etc., etc.) even my very LONG but smoldering fuse would have hit the dynamite lode. So Coach did the wrong thing, but given HE is a more competitive and intense person than I am, the reaction was understandable even if not smart.
And I take you at your word that the ref coulda shoulda just run away in the circumstances. He wasn’t obligated to, obviously, but why not vamoose and let the bench coaches take care of Coach Collins’ fury?
Final thought. There were 3 refs. Would/should they all not be looking intently at the action around the rim at that moment? Or (and I don’t know), is it that one or two would have some kind of “other assignment” in terms of monitoring action elsewhere on the court? This question comes to me because while I can understand that one of them could have an untimely brain spasm (bad night, fight with wife, hung over, etc.), what about the other two sets of eyes? This is where the NCAA conspiracy theorists jump in with claims that they were under orders to give key breaks to the #1 seed,