Re-watching that video, it might not exactly corroborate as he was eating white rice which is relatively low in RS (http://freetheanimal.com/wp-content/uploads/2013/08/Resistant-Starch-in-Foods.pdf). But it does align the PHD idea that it's a bad idea to starve gut microbes of starch.

Regardless, I'm intrigued enough by the ideas to give it a go. I haven't had any starch (beyond any minute amount in a non starchy vegetable) in a year. So if I do flare up, at least I'll be fairly confident in the culprit.

I've picked up some potato starch from the store, I've ordered the 3 probiotics recommended here http://freetheanimal.com/2013/12/resistant-primer-newbies.html and I'll continue eating a ton a sauerkraut (it's store bought, but fairly local and supposed to be unpasteurized and probiotic http://sonomabrinery.com/products.html)

If only we had easy access to FMT to combine with this frown.