got it off! The first one came off hard and the second came off much easier.
Here's what I did:
1. sprayed it with pentrating oil and waited a few minutes.
2. took a standard screwdriver and wedged it into the opening to pry it apart just a little. I put the screwdriver on an angle from center to outside so that I wouldn't damage the plastic bushing for the torsion spring.
3. beat the heck out of it.