Tiesto81, I am just catching up on this thread - I hope the consult in Houston is productive. I'm in Houston and have been through 3 GIs - haven't heard of Abraham but I hope s/he is good.
I think it's important to realize that symptoms of intolerances (like gluten, fructose, lactose, whatever) overlap those of inflammation, and that people with IBD are more likely to have food intolerances than others. That's not to say that consuming something you're intolerant of is going to cause inflammation - I am not sure about that. I think mostly it's the reverse - having inflammation in the gut makes our gastro system unable to properly digest food, and the remnants of the incomplete digestion cause irritation, cramping, diarrhea. Or maybe it's all about the gut flora and we're just out of balance, again resulting in improper digestion leading to cramping, diarrhea, etc. My experience with lactose intolerance (my first real symptom of IBD) and gluten intolerance (later development I think) somewhat supports the idea that solving these intolerances (ie, eliminating the food) makes me feel a lot better but is not going to heal inflammation. That's what my meds are for.
So that leads me to my point - your inflammatory markers are really high. I cannot believe that a small amount of inflammation in your rectum is causing this. I wonder if anyone has looked higher in your digestive tract for inflammation - have you had a small bowel follow through? An abdominal CT or MRI? Swallowed a pill cam?
I think you might feel better if you did an elimination diet, and I would encourage you to at least go gluten free for a couple of weeks and see how you feel. But I think your DR needs to stop thinking only proctitis and start thinking about inflammation elsewhere, especially if you are considering surgery.