Does that mean that when the al Qaeda member says "stop", like a "training exercise" participant can do, that the torture actually stops?

The funny thing is that people like you can't argue that it isn't really "torture".
Cause it is.
It has been explicitly acknowledged as "torture".

And America just ignores the rules...
Cause the bad guys are doing it, so can we.
Cause we Americans are just that scared, we can torture people and not have a problem with it...