F3G,
Agree with you that this is a real area of concern. When things like this happen (sadly, they always will), one of the responsibilities of the other crew member is to act positively and assertively. We all realise that the inexperienced FO would need to feel very confident if he/she is to, albeit constructively, criticise an experienced captain. But the FO would also need to feel just as confident that the company would back him/her.
I've been in a similar situation and it is horrible right up to the moment that you actually open your mouth and say something and then there is (there was in my case) an amazing outbreak of reason on the flightdeck.
I'm sure this company realises that these capable but inexperienced FOs are the last line of defence against the kind of "physiologically and psychologically" impaired judgement displayed by this captain. It needs to take a very hard look at why this FO didn't speak up during or after the flight.
the Wings