Chances are this was posted long ago - but here is a link to an article that suggests two perhaps important things:
1) People testing positive for C-Diff were absent in this particular type of bacteria - Bifidobacterium Longum
2) Of most interest is that the C-diff infection created changes in the gut microbiota i.e created a further imbalance. www.sciencedaily.com/releases/2011/04/110419214849.htm
Miracles and BeatUC perhaps you could look into this and may want to consider taking a supplement with high amounts of Bifidobacterium Longum or something.
Also found it interesting when relating to Old Mikes recent (and old) posts about
positive benefits of breast milk and UC. They are a major source of this strain.