You've certainly got a vibe going here. Unfortunately the abstractness is working against the game - I've finished it and I still don't really know what any of the rules are. I've got some guesses at best, and that seems like a pretty big problem for a puzzle game.
The movement is certainly unique enough to make for an interesting mechanic. I think it'd feel a bit smoother if having the mouse cursor outside the radius didn't stop it from working outright, but instead acted as if it were on the nearest point inside the radius? Maybe a bit of easing near the edge?
Still, it feels like there's good potential here that just needed a polish pass or two to really shine. Pretty good for something you consider incomplete :]