Madbob,
Excellent to know there are such strong leaders not afraid to take matters into their own hands. Next time you have any doubts just crack on and self-evacuate. It will be interesting to see what you look like when you've been spat out the back of a running RB211. Don't know why airlines bother teaching expensive SEP modules when the passengers can do it better themselves.
Oh, and paranoid - if it was one of your mates who shouted out about a fire on board, give them a slap from me. The last thing needed at a time like that are panic merchants. Even if there is a fire, when is shouing about it going to do anything else than make the situation worse when the crew are trying to deal with it?