Ugg... these are always the worst posts to read... Anyone suffering first with UC and then adding on C-diff.. it's to much and, well, just not fair.
I do hope you feel better soon or at least see some improvement. I'm sure even a minor change to the positive would be more than welcome.
Here is something to look into and watch depending on how things go for you (and for others as well). The University down the road a few minutes from me has developed a synthetic version of fecal transplants... It's worth a read through this short article to help understand the difference between this and "real" poop fecal transplants
www.uoguelph.ca/news/pdf/MedicalPostrePOOPulate.pdf and this article is worth the read all the way though as well
www2.macleans.ca/2013/07/08/gut-of-the-matter/Anyway do feel better soon and consider looking into the above at some point if you can't find improvement.