Having said that, I don't think this is quite as revolutionary as some would make out. I have certainly felt and been taught elements of this sort of thing by some of my previous teachers, but not as clearly and systematically explained. And not always done as well as this.
the operating word is "systematically". i had my share of seeing bits and pieces here and there in aikido, but not systematically explained or taught. these IS folks, like sigman and harden, came up with a system to teach folks, and none of those mumbo jumbo "keep the one point", "extend ki", "move your inside" and so on and so forth (ya, tohei's aikido folks are going to have a hissy fit with what i just said, and my respond is "hakuna matata").