Thanks BigNed,
So, is it right to say that basically, the nose and the tail of the plane each are moving in a corkscrew type movement around the cg/centerline of the plane? And if this is right, then it is better to keep the circumference of the corkscrew as small as possible in order to keep the plane at the same altitude, so that if you are combining a snap with another maneuver, then the smaller the snap the better?