Here's an interesting youtube link (not a product pitch) to a post by someone who claims to be free from meds and UC symptoms by juicing vegetables.
Juicing vegetables sounds like a great idea and even if it doesn't end up working as effectively as it has for the person who posted, there should be obvious nutritional benefits and no harm in supplementing your diet with fresh vegetable juice. Enjoy!
http://www.youtube.com/watch?v=_1aRxy5P6jM