There is a fine line between customer and friend. Someone was paying for that boat.
IF there were other divers on the boat and they were also doing a dive past recreation limits I am not surprised they are keeping quiet. But IF this is the case it goes someway to explaining why the decision was made to return to the water - if they knew that other divers potentially had a long deco obligation and could not surface. I`m sorry no matter how much of a habit it is and how fast they are I just don`t buy that a captain with 3 badly bent divers would be changing tanks but I do buy that he could have been in an impossible situation and could not really stop anyone returning to the water
Selkie, please "buy it" that the Cap'n changed tanks. In times of high stress and danger, people will automatically execute what they have [trained in and ] done. That is why the military drills and drills and drills. We count on this auto-response to keep the soldiers safe.