I couldn't shake pouchitis until I started constantly taking vsl3. I would get off the antibiotics and sure enough the symptoms would return. It definitely sounds like you are having a reoccurance of pouchitis. One week of vsl3 is not going to do much when you have been on antibiotics. I know it's expensive and maybe another probiotic will help you.
Believe me when I say I would rather take my probiotics then be stuck on antibiotics all the time. I have had one possible issue of pouchitis since doing this but life is much better.