What Rebel8 said. Times 1000.
TwoGroups, major kudos on using the BOTRK reference. Excellent. Major points deducted for the rest of it. Unless you are attending meetings because someone has a gun held to your head, I'm not feeling it.
Cold turkey or fade. Those are your options (I'm assuming telling everyone, during your next talk, that they are in a death dealing cult run by evil DarkLords isn't an option).
While you are there I would suggest: sleeping, playing with your smart phone - routinely getting up to go take/make 'important' phone calls, checking out the hot sisters (or brothers, or both, whatever your flavor(s)), or shooting yourself in the head with a nail gun full of rusty nails.
Otherwise, why spend any energy worrying about these dysfunctional misfits and what they do or don't do? It's akin to going to the all you can eat buffet and lamenting that you are surrounded by obese losers and trying to get them to choose a low cal option (yeah, right). The solution? Don't go.
You aren't in denial; there is hope for you. Good luck.