I get that the airport security dragged that man off. But still, it seems like it's United's problem to get an aircrew to their next departure point. So they should have offered more compensation instead of using their removal policy.
And, I'm the lone wolf here, but the Doctor really should have gotten off when they asked. You can't argue with an airline crew on a loaded jet - security won't ever allow that and in some cases you can even go to jail.
Just seems like UA could have handled their end better. I never did like flying them or Continental. But they didn't do themselves any favors.