Looks good. I'd like to echo LB's question about chaining moves with this. A spin to stiff arm or even a spin to a plow forward kind of animation you see power backs attempt would be awesome coupled with this. Again though, looks good so far
EDIT: Weird, a bunch of these posts didn't show up at first...I only saw three when I posted. To add on the second video: I think the spin is too tight and fast (mainly the speed that bugs me) for many of the backs in the league. As has been said already, it's good for quicker backs, but some variety would be nice here.