Well he refused to follow company SOP's, his method of getting people to do things was to shout at them, no-one wanted to fly with him, etc.
That enough?
Then I'm sure you followed your company procedures, and reported the individual, or perhaps you even had the balls to speak to him one to one?
Your opinions of the individual(s) concerned are irrelevant. What was on trial here was whether Cathay had dealt with them fairly - and most people do not reckon that to be the case.
Any company will have it's bad apples, and personality clashes; the way to deal with that is not to summarily fire them without justification. What a pain we can't just sack the people we don't like, but it protects us all from a bullying management.