Erick, I believe you've misattributed a quote by me as coming from Rob.
As far as what Don Angier does or doesn't teach, I'm in no position to comment or presume. I did not intend to drag Don's name into this, only to point out that the explanation he provided on that particular video clip is precisely what Cady said, and has nothing to do with rotational dynamics - at least not in the way he explained it.
BTW, I didn't "forget" anything... I figured fandom would get the gist without my being superfluous.