I saw this story the other day and it's unfortunate but I feel like it might be the right call considering the circumstances. If he continued to shout bomb during the flight it could cause bad situation on board with the other passengers.

That said, I feel like there should be some solution that allows him to fly despite the outbursts, although I'm not sure exactly what that would be off the top of my head. Medication? Some sort of speech dampener (read: muzzle)?