I also had an obstruction two years ago, and I'm sure it was because I ate a bowl of lettuce!!!!! I also have a stricture in the terminal ileum, and I don't eat raw vegetables, skins, corn, nuts, seeds, I don't eat fruit unless it's mashed (except bananas). I can handle a little onion and garlic but not too much. Pop corn is a killer!!! When I'm having a bad day, I stick with toast, crackers, tea, rice, mashed potatoes, chicken broth, soups. Although I'm suffering from time to time, I'm not ready to give into surgery yet, because I have met many people who manage to live with their stricture for years, by adjusting their diet and taking their medication.
Hope I helped a little bit!!!!!