hplus0603, that makes a lot of sense. It was just in my mind all those methods seemed excessive for moving one object. Though like you said physics is not the most expensive part of a game engine and corrections should be infrequent.
I had a suspicion that was what cascading correction was. I suppose it might be worth rewinding other objects as well if you are stepping through for everything to miss those edge cases like a closed door.
That makes sense why no forums really talk about it. Also it was pretty obvious and I am pretty dumb ;)