Threatening behaviour is not justification for laying on of hands.
I very much doubt the will be prosecuted for the assault. I do find it interesting how many people think this is justified tho
To lay hands on someone is a big step and to do so in this situation is clearly an assault. It cannot be otherwise. if the big man had not intervened what would have happened? Nothing. Therefore the assault is not justified. You can only commit a crime to prevent a more serious one.
I am quite happy to see him ejected and applaud public spirited citizens – and I have actually done similar including laying on of hands myself – however be under no illusions its an assault to do this. teh police had been called, no one was in any danger. No need to commit the assult
Waht about if it was a woman? A child? An OAP?