Without a rudder, what you're doing is the best thing you can do to attempt a recovery. Hitec/Multiplex is coming out with an updated, more advanced version of the Scooter called the Space Scooter. It'll have a semi-symmetrical airfoil and a rudder, if what I saw at Toledo is any indication.

Every time this thread gets updated, I just boggle at the prospect of a flat-spinning Sky Scooter

If you dread them, don't put yourself into a situation where you get into them. Check your balance.