Even if we feel it’s justified, we can not force passengers out of an aircraft. If they have to get off, you ask and they will normally comply. However... some think they can hold the aircraft (and its crew) to ransom when delays are exessive and/or they have considered themselves to have been messed about. But the reality is when the flight will not be departing and they are required to leave it becomes a matter for government authorities to get them off the aircraft. And they will do whatever they have to do, after all I’m not trained in hand-to-hand combat. But when the dogs get on, they normally get off.
PM