Lower control arm outer bushing shell removal frustration...

I just finished doing this very job. Once the rubber is out of the way I grab my die grinder and a round carbide bit. Carefully grind a vertical groove up and down the bushing shell. Then collapse it with a chisel. It falls out. Yes it is possible to grind too deep and groove the inside diameter of the LCA. But being careful you may leave a small witness mark [line] in the LCA. in either case, there is more than one option for doing this job. I like reading others ideas...this is my technique.