Airline bumping is legislated. You get bumped involuntarily, you get $800. He got bumped, he can get the money.
If he doesn't get off the plane what else are they suppose to do?
I don't know how a grown adult can get into a situation where they need to be physically carried off a plane.
His behaviour was childish, unprofessional, and completely unacceptable.
Refuse booking at the gate.
Not give seats that paying customers are already occupying to their staff.
Not remove paying customers using so much reckless force that they break their nose and teeth in the process.
Accept that they've made a mistake and send their staff in another vehicle.
This man was different for some reason. I hope he is a rare case.
Like that passenger, who did NOTHING. We even have a video (not the first one that was published, a later one) that shows wat he did: NOTHING.
No, the real problem are people like you. You should be removed - from everything. Do you wat to see an asshole? Do you have a mirror?