I need facebook, backtrack, or hacking experts for a serious issue!

Basically I need to get back into a FB group or at least find out who the hidden admin is because this "admin" took over a major group and deleted all the head admins. There's some serious foul play I need to get to the bottom of. Anyone who knows how to exploit the hidden admin, find out what email account is linked to a FB group, experienced with backtrack5 exploitation, or anything else that could help please let me know so we can catch the snake in the grass and ban them from our label. You can send me a private message if needed. Even a link to any kind of tutorial or help would be great. I've already tried a few things in BT5 but they didn't work (FB is pretty secure until the wrong person gets admin permissions). I have a hunch of who may be responsible, but it's more than one person and I'd rather not get into a bunch of email accounts if they're not responsible....

Did you file a report on facebook yet?

I haven't yet; they'll let us report the page but since this person removed all the main admins (the ones who actually created the group) I'm not sure if there's a way we can prove we own it...I guess it wouldn't hurt to try, but then again since some of the members were going admin crazy I'd like to know who the person was so we know who to block from now on :/

You Facebook hack Email and Password??