any flatspin is a spin on a flat axis. ive seen flat 360's up to 900's, and technically, flat 180's are possible as well (good luck).
i think what erik is trying to say is that the trick is like a backflip, in that you can't have different variations of it, it is what it is.
i disagree, it is more of a spin, and you can have different degrees of rotation of the same trick. kind of like a cork, you can cork any spin, yet it is still a cork. i think you can also bring any spin onto a flat axis, and it is still a flatspin.
Joel
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