Not having any experience on that part.
I would treat it as a Drunk nob that needs cuffing.
It's ONE person. What can he do while he is restrained?
Let's assume there are 300 pax in there. Is is logical to divert due to one person?
It would cost an awfull lot of money to divert. I doubt the offending pax would be able to pay back for what he did. (won't cover the divert).
Also note, I assumed that cabin crew were trained for such an event? I mean how often has one had to deal with rowdy pax?
Take a different concept. What if someone onboard is seriously ill? Then yes, divert is definately on top of the list.
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