Maybe I've just been unlucky! Offloading is a last resort and would never been considered for point scoring with a rude pax - what's the point?
The issue I'd see with threatening to can the flight is having even more upset pax onboard the a/c with police who may have already demonstrated unwillingness to be pro-actively helpful. And it's quite harsh on the 99% of well behaved passengers.
And maybe it's just my bad luck to have had two situations were the police did not agree for at least half an hour to offload the passenger.
Thanks for the replies,
Screwballs