SDrvperI completely understand what you are trying to say, and you would be correct if we were talking about a rodeo, but this is a flatspin.
A flat rotation is not an inverted trick, and by definition not a flip, making it possible to do a rotation that is under 360 degrees, end of story.
I'm not trying to come at you with these posts, but you aren't right.
No one does a flat spin the way you just described it other than a very select few. A flat spin is still a 360 rotation anyways, any other variation would be "corked". If someone throws a flat 3, flops their body around to land backwards, they probably were doing something closer to a cork 180. Get what I'm saying? Flat/rodeo defines a flip, like I said if you watch a mark abma or Eric Pollard flat 3, they're still 'flipping' just not necessarily inverted. Just because you don't go inverted doesn't mean you're not flipping and doing a 360 through that flip. A true flat 3 is the same rotation as a rodeo, just off axis and that's why you can't have a flat 180, period.
The trick posted earlier called 'flat 180' was most certainly a flip, even if he just leaned his head to the side, he's still flipping. Just because someone does a trick and contorts their body doesn't mean they're on a different axis or whatever you're trying to describe.