I just stuck an Allen wrench in the pivot bolt and pulled it out. Thanks FBinNY!

Shifting is pretty good now, but not perfect. I'm noticing that the chain either runs rough (catches the next sprocket a little) at the top of the cog or the bottom depending on how I fine tune the cable tension. Aligned at the top, and I'm a little off at the bottom; aligned at the bottom, and I'm a little off at the top. I'm not sure if this has anything to do with the bent hangar though.