"1. What really did this guy say? we don't know, we weren't there."
Apparently during a loud back and forth with the flight attendants he (an Iranian, legally in the U.S.A.) shouted "Death to America" but wasn't violent, and pax did not subdue him.
All in all, a pro reaction all round, including the masked police tactical squad removal on the ground and formate F16s.
And he won't be flying with us again. What a MORON.