We use the huen sau to recover the centerline and get on the inside of the opponents arm so would i be right in guessing that the outward rotating huen sau is used to get on the outside of the opponents arm and why would they want to do that ?
In my WC and WT experience,
huen-sau has multiple uses. In forms, it stretches and strengthens your wrist as well as training the circling movement. In chi sau and sparring, it allows you to stick to and control your opponent's bridge as you move from the oudoor to indoor position or reverse. It also allows you to effortlessly dissolve a wrist grapple. In all these applications the "oi huen sau" may come into play, and as you noted, be used to
recover centerline. An example would be a lower level wrist grapple in which an opponent firmly grabs and holds down your right wrist with his left hand. Depending on how he applies his force, you can use either version of huen sau to roll out of the grapple and take control of your oponent's bridge. But from the lower level, the reverse or "oi huen-sau" rolls your wrist thumbward and to the inside gate, reclaiming centerline as you put it. I believe this movement is actually common to most WC/WT branches...it's just that it had disappeared from our forms. Well, forms will vary. The proof of any technique is always in the practical application. And, as Grandmaster Yip apparently
did teach this movement in his early years, I feel it's definitely worth a careful look. I don't know about Brocklee, but I'm interested in what I can learn from
all branches of our art....
BWAA HA HA HA HA... HA HA HA... (evil laugh, right back atcha)
BTW Brocklee, did you get my last PM?....What's up, man?