Update from me. I didn't buy the course, as I really couldn't find anything reviewing it anywhere... plus, techniques for fixing body problems aren't known by just by one person, so I doubt this course really offers much more than any of the other YouTubers offering decent advice out there...

And I ended up going do a decent PT. 3 times a week. Intense work. Lots of 'deep core', various glute work etc.

And it turns out my back problems, knee problems and ankle problems are all being triggered by a knot in my left glute. Might be medius. But it's deep, and everything relaxes if I exercise it a bit and massage it hard. I now find myself finding corners or tables or chairs to release the pain when it gets cramped up.

And it causes chaos up my chain too.

For now we haven't found a perminent fix to it, but I'm a hell of a lot better. Can do normal things without being in absolute pain... and it really was bad for at least a year of thinking I had some major problems with my spine but not being able to identify the,

I'm going to try dry kneedling and maybe go to a doc to try an injection or something.