first off make sure your openers are made while you're talking to the set over your shoulder, not completely jus a bit tilted like your ready to walk away. You obviously should know about the false time constraint let your body and words suggest that your the center of your group and you may leave the set at any time. If they don't respond too well, make sure you leave approach a few other sets, and then go back to them. As you already know keep calm be cool, and make sure the AMOG (if there is one) doesnt make you look stupid. If he tries to insult you go right back at him but subtly, as in address the group when you insult him, dont aim it at him. I would seriously advice that you keep on good terms with the guys in the group. Jus have fun, it keeps getting easier
cheers