well, whatever happened on the plane will remain mystery,
whether or not he tried to stop the hijacking & get killed in
the end, we don't know.
don't forget, its 1 vs 5 and the hijackers may have been scattered
on different parts of the plane. Moreover, once the hijackers
control the cockpit, theres nothing much the rest of the passengers
can do - cos the cockpit is like seperated from the rest of the
cabin.