I followed the same diet and my symptoms left me in about the same amount of time after a year of suffering. I ordered a book from a website (not sure I can post it here).The author claimed 100% success. It sounds like the same book.
Raw Food Diet
Recently I started having symptoms of Colitis (diarrhea, blood in stools, upset stomach, nausea, etc.) I did research on the net and found a web site where a man had colitis for 8 years, in and out of the hospital, almost had to get a colostomy bag. He decided to go "natural" and has been symptom free for 24 years. His secret: a raw foods vegan diet!!! I started the diet and my symptoms have gone away!! within 4 days I felt and looked better. I have lost 17 pounds in 1 month and feel great. I truly believe that a raw foods vegan diet is the answer to ulcerative colitis. Give it a shot and see for yourself!!!