I really really hope I am interpreting the wording of the report incorrectly.
In my opinion if the PIC left his unconscious co-pilot and his passengers to fend for themselves then any punishment he recieves will be nothing with having to live the rest of his life knowing that he is a you know what.
Please tell me I've got it wrong, but it looks shocking.
From what I know you have it right. He got to the exit damn quickly, opened the hatch, and out he went. In fairness he may not have had much choice in a cramped and dark cabin if water poured in when he opened the hatch. Still it looks bad. It was his decision making that got everyone into this mess. Then he opens the hatch, floods the cabin, and is the first out. This was one captain who wasn't going down with the ship.