Hi everyone,
I haven't followed the whole story so I can't directly comment on the case.
Regarding captaining, like you say Michele, the job comes with responsibilities. Particularly with regards to emergency procedures management. The Captain added value in those situations is the decision making. That is why he is payed more than the other crew members.
Ships or aeroplanes are complicated pieces of engineering that require a technical expertise to operate specially in an emergency situation. On top of the technical knowledge of his ship / plane, the Captain duty is to make sure he has an accurate situational awareness of what's happening so he can make decisions using the technical tools available and the crew. In order for that to happen efficiently, a clear chain of command is supposed to have been put together and trainned for with each crew member knowing his/her role. The Captain sits on top of that chain and has to apply his authority over the whole system. His obligations are formally described in regulatory / legal documents he is supposed to have demonstrated his knowledge of.
Then I can't see a Captain being concretely able to manage a rescue procedure from outside his ship... In that sense I suppose he has failed to comply with his duties.
But again I have not followed the story, and these kind of situations involve so many factors that it is always difficult to make an opinion until all the circumstances are clarified.
cheers

feno