Originally Posted by Aardwolf

I removed a fixed cup recently.

Soaked with penetrating oil for 3 days
Fixed tool in place (Sheldon Brown 5/8" bolt in my case)
Apply socket set
Apply 4 foot scaffolding pole extender bar
Place frame on floor and lean on the bar.

It was resisting with a 4 foot handle on the socket then it just gave up.
No damage to anything.