I would be very surprised if the shaft was bent, the biggest risk of a damaged bearing is wear on the shaft if they seize, but if you have access to a lathe not hard to make, now to press out the shaft from the pulley side, I have a thick steel disc with a hole that allows the pump spigot to enter and goes up flush against the pump mounting flange to push against without breaking the flange, I normally press them in a workbench vice, if the housing and shaft are not damaged, reassemble with a new seal and bearings.
Cheers
john