I finally got around to reading the briggs protocol. Great stuff in there! It's funny that it's completely targeted towards chrones but falls in line with the approach we are taking for AS/PsA. Again, I run into people recommending N-acetyl cystine and glutathione. I'm going to look into those even further before I take the plunge as I know glutathione isn't cheap. I also noticed his rec. for bovine colostrum. I've noticed that DragonSlayer has taken colostrum before, as well. I don't remember in his post wether he was for/against or neutral for its efficacy.

1 pound of sauerkraut per day! You are a beast!
Your veggie discomfort could just be a sudden change in diet? Lots of people here and with auto immune issues have troubles with avocados. Take that one out for a few days and see how it feels. If you haven't tried that already?
You've been autoimmune protocol for a year. Have you tried introducing other foods aside from veggies? Ie. grass fed ghee, seeds nuts etc as per her reccs. Are you similar to me, whilst following the AIP, in avoiding the starchy roots and tubers aspect?

I try so hard to understand studies like the link you posted! Little snippets of info pieced together can make a huge difference. I need to be mindful not to misinterpret info and draw incorrect conclusions. i did take away from it the fact that twins were not doomed to the same fate as each other auto immune-wise. That again falls in line with our approach and not giving in to certain doctors' archaic and somehow definite assumptions. I like to side with Dr Ayers when he says that genetics only play a small role. Families usually eat the same food and pass on "grandma's secret recipe" for generations. Unless I have 30 days left to live, I don't want to hear anything about incurable, untreatable etc. Even if it is, give me some shimmer of hope and control so I can be pro- active in a positive state of mind. There's no right or wrong answer here but when you already wake up feeling like your body has been stomped on by a herd of elephants, the last thing I want on top of all that, is for my mind to get crushed as well.

I really need to do some more studying on Tregs so that I can contribute more our situation and discussions.
What did you study in college, if you don't mind my asking?