Need help removing Total Chaos tapered adapter

I'm trying to remove my Total Chaos UCAs and put the stock ones back, but I cannot for the life of me get the tapered adapter out of the spindle. It doesn't go all the way through, so I can't press it out (up) from the bottom. I've tried PB Blaster over night. I've tried shocking it loose with hammers. Tried tapping a flat head screw driver under the collar to pry it up.

Anyone have tips/tricks for getting these little adapters out? I don't have access to a torch, so I haven't tried intense heat. I'm hoping I can get away with something short of that.

Cheers!
Jeff

 

Trial by Fire?