Only if he wants the crew to pick a new Captain.  This is NOT a naval vessel, or even Merchant Marine where the skippers' word is law.  HE is a bit more than first among equals, but he will have to put up with a certain amount of crap from the crew.  Now, if he kills a man in a personal duel, he will get that much more respect of course.  But it has to be seen as a fair fight.