IBD anyone?

Hi I'm new here but after asking one general question and getting a great response I'm going to throw out something more specific. I've finished one sprint triathlon and am starting training for a 1/2 ironman next year. I'm confident that I can do the distance because the run and bike are a piece of cake. My swim is a concern but I'm getting in the pool at least twice(usually three times) a week and its coming along nicely. As I ratchet up the hours though I can see how important nutrition is. There I run into problems. Not only do I LOVE junk food, I also suffer from colitis, which is a form of inflammatory bowel disease (IBD). That means that a lot of the healthiest foods (fruits and veggies) are irratating. My disease is well controlled with medication but when I eat too much roughage I can tell the difference ( I won't go into details, If you have colitis you know what I'm talking about)

I would love to hear from someone like me who can give some nutritonal advice specific to IBD sufferers.