No he wasn't arrested. All I know is that he wasn't going to extend his duty day as was his contractual right, because of the endless delays brought on by the operation.
He specifically asked for a police escort off the aircraft for his own personal safety.
It had nothing to do with going to Israel or making some sort of political statement.
I have only heard this second hand from other forums, so this being a rumor network is a good place for it.