sometimes a little nudge in the right direction with the pulley nut on and a wooden block and a decent sized hammer can free it off.. but go VERY CAREFUL or u could damage the shafts thread, spray a bit of wd on there first also.
Almost lump hammer size 😯 ,sometimes the bearing comes out with the shaft,a brass or copper drift will also help.
Worst scenario is a new drum shaft which will make a better alround repair anyway,shaft and bearings together are cheap enough,I’d be tempted to consider changing both.
i use a tap to clear the blue anti shake compound from the spider thread then find a bolt and washers to screw in the back of the spider then belt seven bells out of it with a lump hammer. you can spray wd40 down shaft to try to help but in effect it can be brut force and hope the plastic does not give way