Whoa there. This was no mere bad judgement call. Having him thrown off the plane was over-the-top malicious, totally beyond what I ever expect from anyone who is "having a bad day." I sincerely believe such a person really shouldn't be in any sort of position where they might have that amount of power over other people.
Put a hundred random people in the same sort of bad-day position, and I don't expect one of them to behave like this one did. This one is truly exceptional, and does not merely "have bad days." This is the kind of person whose news stories are usually headlined something like "gunman kills five then self."
I might be willing to excuse them, if say, their psychiatrist were to explain how this was anomalous for their character and that their medication was defective, or something like that. OTOH that can be handled in their lawsuit against the medication manufacturer, and then this psycho will never need a job where they exercise power over other people again.