Sounds like you've really been put through the wringer.
I found some good articles from the IBD Journal a while back, all of which discuss how to manage steroid-refractory UC. They were published in the January 2009 issue, and they are all available on-line for free
They start on page 141 and run through page 153.
I thought you might like to read them before your appointment at the Cleveland Clinic!
Symptoms began in November 2008, ~4 weeks after giving birth to my son.