He decided that he wanted to push the issue and it went somewhere that he didn’t expect it to.
Sometimes it’s good to know when to STFU and move on.
If his side of the story is true, which is debatable, I don't completely understand why he was arrested. Especially if they can't cite the airport rule/law he violated. (I don’t think STFU is an airport law) Let's just see if the surveillance tape turns up.