Are those bus tracks on my back?

[TussAgee11]

To answer the original question, I'm having a hard time "visualizing" how U1 saw something that you didn't see? I guess you just caught the end of his flare up?

If I were U1, and I feel you, as U3, saw him do the whole thing, I'd leave it up to you as to what you wanted to do with him, as long as his actions weren't blatant 99% of umpires would eject for (because his problem is with you, so if it bothers you, you handle it). If you ejected him for these antics, I'm the first one to play rodeo clown for you and show him the gate. Don't read this as saying I don't have your back, I'm just allowing you to choose if you wish to take the garbage out.

If I felt that you didn't see the whole thing (getting to your next position, etc.) then I may eject, but would probably give a big stare or say something at him, give him one more choice. I definatly wouldn't standby and say nothing if you had your head turned.