Just a piece of advice - talk to your nationals and see what they can do to pull you out of this hole your in. If they can't do anything abou it, talk to your school and see if they can do more for greek life in general.
I'm sorry to hear about the coke ring - and yes as somebody stated, it happens more than you think. If that can bring down one person, imagine the effects it can do on an whole organization.
I hope things get better for you. Talk to your organization and see what their plans are for the year. see what they are intersted in, and what the campus is interested in. Get some excitment back in your life, that's what greek life is all about!
Hope it helped
Smile!!!