Hey,
I've never seen or even heard of anyone doing the move you describe, in fact I cant even see how it would work smoothly (as you would be pushing the spin planes through 180 degrees) without taking ages to 'work' them round.
<on second thought - you could turn your body 180 with the poi doing fwd weave by going behind your back, is that what you mean?>
If you get it, post a move description - I'd love to learn such a centrifugal force-defying move (a bit like going straight from weave to buttefly
)
My twirling style concentrates on moving my body around the spin planes, with a minimal use of plane-shifting (eg to horizontal from vertical)...
My girlfriend tends to do a lot more plane-shifting - but I think this has to do with the fact that generally she twirls a lot slower...I guess to facilitate the dance aspects more easily...
as I said - when you get it, give us a yell! 
Good luck, and I hope to hear from you soon,
Josh
[This message has been edited by [Josh] (edited 06 March 2001).]