Johan Mjallby would not blame Neil Lennon for walking away from football after the Celtic manager was attacked by a fan at Tynecastle as the visitors kept their Clydesdale Bank Premier League title hopes alive with a 3-0 win over Hearts.
When Gary Hooper scored his second goal in the 49th minute - after Jambos midfielder David Obua had been sent off before the break for raising a hand to Charlie Mulgrew - a supporter came out of the main stand to grapple with the Parkhead boss and was marched away by police when the ensuing melee ended.
It is the latest incident to involve the Irishman in a season in which he has had bullets sent to him in the post and a parcel bomb intercepted, as well as having to live with round-the-clock security.
Celtic assistant Mjallby said: "He is a strong character, he has coped with so much. The backroom staff are desperate for him to continue but no-one could blame him if he decided not to. I would never blame him whatever he does.
"I was watching out of the corner of my eye and Thommo (Alan Thompson) reacted. Neil Lennon defended himself, of course he would. You can't call this person a supporter. I'm shocked and Neil must be even more afraid. What if he had something in his hand?"