As someone with many years of having to cope & deal with it in my family, I can tell you Chansiri is a text book narcissist.
Confrontation, if possible, should always be avoided, if it isn't possible, watch out....no contact 'rule' is also almost impossible due to being fans of the club, he will continue to act out his delusions as he sees fit.
If he does go, it will be under how he sees it, any damage caused won't be his fault.
There is no cure for narcissism, eventually it's a wrecking ball through people's lives, for those not involved it can be entertaining, think Donald Trump, for those in it's path, well, almost anything is possible, can only hope the end result is just a side swipe, cos in my opinion he IS capable of destroying Sheffield Wednesday as we know it.