We tried last night. The bushing with the steel collar around it. What a PITA. Ended up pressing the rubber part out with a socket and then used a hacksaw to cut the collar out by hand. We're still trying to figure out how or what to use to press the Pedder bushing in.
I take it you didn't have a slightly bigger socket to get the collar out too? A press would also be my suggestion for the new bushing, just put the pushing in the freezer the night before so it shrinks slightly and goes in easier. Good luck.
Btw, for those who don't wanna pay $200+ for a new OEM control arm but don't want to replace individual bushings, Mevotech makes a direct fit control arm for our cars. It's less than $100 shipped on RockAuto.com, and I've been using one on my driver's side (torn ball joint boot) for several months with no issues.