[Jocelyn.]

I'd just try and pick your battles with this one. I don't know much about D&D, but I assume he probably has a certain gaming rhythm going with these guys and enjoys playing with them in particular. Yeah, he probably should have stood up for you, but If you don't care for these friends (and the feeling is mutual with them) let him go off and enjoy his guy time while you go hang with some girlfriends. Its only a couple nights a week.