The period of terror would have been shortened considerably had the passengers kicked the crap out of him and then tied him up. I suggest the airline stock zip ties.
I would have been more than happy to participate. Anyone attempting to interfere with the operation of an airliner is guilty of attempted mass murder and should be treated accordingly.
I agree -- and have advocated that for years.
"What's that you say, mister terrorist?"
"The one around your neck is too tight?"
"Ooops! Looks like these ties only go one direction..."