Originally Posted by
arex
Metal cup, I'm assuming? Try using a crappy old flat-blade screwdriver you don't care about and a hammer, setting the blade on one of the splines and try to spin it out that way
If your really lucky it will be plastic (Shimano UN54), this can be cut out with a mini hacksaw, if metal, and you have a vice, stick the tool in the vice, and rotate the frame round it (you may need to secure it as
#ThermionicScott suggests