Same with a judge who is forced to step down for judicial badness. What happens to all the decisions he made? Are they aborted and all the cases retried?
Of course when doctors lose their licenses for malpractice you can undo someone who died or uncripple unmaim someone he harmed.
There really is no recourse for those who were harmed is there? All that happens is that the bad doer no loner has power to do bad things. The past is the past alas.