Thanks for all the advice - DArthurBrown hit it on the head with the idea of trying to pry them apart inside.

I forgot I had a small carpentry clamp - I made two wood chocks to fit inside there the same rounded shape, put them on the carpentry clamp and all sorts of fun crackling noises later, POP, one of them went flying across the room and into the bucket where I have my chain soaking in degreaser.

Having one out of the way let me get the other one with the lump and a round piece of wood I had lying around that's only slightly smaller than the diameter of the shell.

Oh, and they WERE epoxied in - there's only a fine bead of it, but I've got the 'pieces' of two epoxy rings that were holding them in.

Whiskey tango foxtrot?!? Who epoxies cups into a shell?

Micargi I guess. Another reason they're a cheap brand?

BTW, I'm shocked and pleased to see so many responses so quickly - an ACTIVE bike forums huh? I'll have to stop in more often.