issue translating points....

Hopefully someone can help me with this - I can't think of a good title for this issue, but let me describe it.

I am trying to distort some geometry with a rotation, but I want the effect to change with distance.

I set up a basic attractor point, and so now the geometry rotates more when it's further away from the attractor pt/center of rotation.

My problem, as you can see in the image, is that certain points are rotating a different amount *even though they are the same distance from the attractor* - and the rotation angle is determined by that distance.

So, I'm not sure what's going on. Any Ideas?