Hey guys...I came up with this all on my own a little while ago, I just needed to consolidate it a bit more in my mind before I typed it....so far I havent seen anyone pulling this particular move (cept me)
Basically;
1)Start in fwd figure-8 in front of your body with the staff in your right hand.
2) As the staff leading head comes down and across to your left side lift your leg and let the staff go under your leg.
3) do a turn or 1/2 a turn while holding the staff under your lifted left leg (your leg should sort of be 'draped' across the top of your arm.
4) AS your following end comes to the front and you feel the need to come out from under your leg, turn your body 180 degrees clockwise thus reversing the direction of the turning of the staff (done obviously while balanced on one foot, while the staff is still under your leg).
5) Complete the under leg reverse rotation (unwind) and take it out the way it went in.
This is the basic Under the leg non-release staff move as I see it.
Obviously as you only use one hand to do the move, you can do it while spinning another staff in teh other hand....try alternating between legs..
Of course, rvs is possible, and combos are possible...I'm wondering if double between the legs is possible..I'll try tonight 
Fingerspins and wraps and stuff will make this basic move into a whole new section of moves 
Anyhow - thought I'd drop this in there, to keep the staff section kicking on.
Josh