I've wandered off in the web you've pointed out, but it seems, looking at the forum, that it's more intended to bodybuilders, or the like. Don't you have a resume of it?
I wouldn't read the forums if I were you I would just look at the old Manual and the new Manual someone else wrote.
Old Manual Relaxation:
http://www.maxalding.co.uk/mc-book-english/mc-e-4a.htmYou can see the new Manual by going here:
http://www.maxalding.co.uk/Philosophy/philosophy1.htm Take a look at part 3 (bullet point 2 if you are in a hurry) and part 9 and tell me that kind of control wouldn't be beneficial in AP-especially 11.5.1 )
Maxalding is basically the art of controlling all voluntary and involuntary muscles in the body by creating a better mind-body connection. The reason these guys were extremely muscular is because they also lifted weights and did hand balancing. The muscle control itself is just establishing a better nerve connection between the mind and the muscle. The nerve becomes stronger and the signals travel between the two better. In the process your muscles will also become more supple and stronger with less daily residual tension.