Originally posted by BMatthews
PS: Actually thinking it over we have a very unique situation here. With wings at 45 degrees the effective projected span of the model in level flight is going to be the same as the model banked 45 degrees with the one wing horizontal. So the area in both cases will be the same. This means the fuselage WILL NOT settle as the model rights itself back to level AS THE WING AREA WILL REMAIN CONSTANT THROUGHOUT THE ROLL TO LEVEL.......... 
You just forget the position of the center of gravity. The fuselage WILL settle itself back to level once the lift is equal both side of the CG.
Bernard