I experienced the same, although my gluten-induced inflammation is linked to something with my gut bacteria. If I take a certain antibiotic that targets the digestive tract, I can eat anything for 9 months, including gluten, without problems. After about 9 months, I can no longer eat gluten. And then about a year after that, I can't eat corn. This has repeated 3 times, and unfortunately, I'm with a gastro doc now who won't give me the antibiotics and wants to test me for celiac (which will be the 5th time - I've always been negative).