I think that many people panic because they cannot escape or hide, they are in a small, confined space, they are 35k in the air and the first thought that comes to mind is crashing. There is no where for them to go and for the most part they feel a complete loss of control. I've experienced FA's do a marvelous job of dealing with this mindset and turning things around, but you will always have those you cannot calm down so well no matter what, those who always remain calm and collected and rational and everything else in between. It's always scarey for the kids on board too and for parents, that is the best reason to try and remain calm and sooth your children as they look to you.
It's very sad about what has happened to this Captain and surely there are reasons/circumstances for it. I hope he gets the proper help that he needs. It's almost like suffering a panic attack of some sort but I don't know. Obviously many factors are at play here so I don't want to really even guess and none of should be trying to do that. The real kudos belong to the F/O for keeping his head, recognizing there was a serious problem/issue with the Captain, taking control, getting him out of the flight deck on whatever ever whim (quick thinking there) and keeping him out and to the FA's for aiding in subduing him and trying to keep the pax calm and in control. Must have been a helluva deal for all the crew and pretty upsetting. I feel badly for the guy. Not the way that one would like to see their career end. He's naturally been suspended, but who knows what may happen. Everyone deserves a break and the benefit of a doubt.
From my sister's boyfriend and also my friend, (who is a Capt. with JB) I was told that Captain Osbon is well respected, a very competent pilot and very nice with a great sense of humor, well liked, seemed to be a pretty happy guy and that this has come as a complete surprise/shock to everyone and they are pretty upset and concerned for him. He snapped/had a breakdown for whatever reason(s) or it could be very well something medical that happened. This is never funny and it's a real shame. I hope he will eventually be better. On one hand it's also regretful in some ways that in these times, that everything goes viral immediately complete with photos and videos, followed by mostly idiotic comments and assumptions. I feel especially badly for his wife and family who probably have seen this as well. Ugh. But it's a good family type of atmosphere at JB and I know he and his family will get plenty of support from his co-workers and JB is one of the few reasonable companies left out there who still cares for their employees.