Very interesting, and amazing that they are able to adjust it externally. That must have been intense.
I think you're right about the bacterial overgrowth and resulting endotoxins. That was a big part of my problem - colonic bacteria growing in the small bowel. It's remarkable how bad they can make you feel.
Some of those bacteria are only susceptible to bile, so I recommend you look into that as one of the ways to push them back into the colon.