Thanks for all the responses guys/gals!
I was trying to give my fiance some advice on how to handle a rude nonrev. The problem is that if he CA doesn't give a dang about how the passengers are in the back there's not a whole lot that can be done without actually reporting them. That was the case in the situation that brought this post to light.
Anywho ... thanks again!! The responses I see here very closely resemble the way I would go about handling a situation if one were to arise.
Cheers fellas!