Can you point to an ideal camel spin that fits your definition (pre-COP if necessary), because that shape you illustrated is hard for me to imagine.
http://www.youtube.com/watch?v=LVt3I4IL18s&t=1m17s
http://www.youtube.com/watch?v=LVt3I4IL18s&t=1m50s
http://www.youtube.com/watch?v=VfluAux0Sf0 (just gonna link the whole thing, it's something that should be watched at least once a month anyway )
See how the free leg and upper body raise up from the flat of the back, forming a shape similar to what I was talking about?