I have a [link=http://www.rcuniverse.com/forum/upfiles/76492/Zx70134.jpg]Sky Scooter with a rudder[/link], and it will often enter a spin when giving full aileron in a nose high attitude... It's not a flat spin, because it's always ends up nose down at about 45 degrees when it starts spinning. The guys at the field call it a 'flat spin' though
The CG is a bit aft of stock because of the extra servo behind the wing. I have never had to use the rudder to recover. Normally, I just let go of the sticks and kill the power and it straightens out within one spin. If the power isn't killed, it just keeps spinning. I've done it intentionally a few times from high altitude. Wait until about 50 foot above the deck and then chop the power and pray
The Space Scooter sounds cool. I hope that someplace will just sell the wing by itself. The Sky Scooter wing is good for a trainer, but it doesn't fly inverted worth a darn.