I see we're moving on to the straw man as well.

Obviously there's something missing to this whole story. Like I said before, the captain is not going to deboard the aircraft without a darn good reason. He still has the company to report to. If that plane doesn't depart on time, people are going to ask/examine why.

As for the cabin crew member challenging the captain, I'll be the first one to say that almost all authority should be challenged; however, to do so publicly in the way that OP suggested they did? Entirely unprofessional. If they really behaved in the way they did (which, to be fair, I'm not convinced is 100% accurate either considering we obviously have an incomplete story here that is being told from a sole perspective - OP's), they should be reprimanded for their behavior, regardless of whether the captain was ultimately in the right or not.

The number of people in this thread that feel the cabin crew member's behavior was appropriate and who feel the captain was out of line is shocking... especially because, again, we are missing the most important details in this story that would explain and/or justify the actions of the captain.