He needs to file a lawsuit against both women, even if he doesn't think he can win. That, more than anything else will repair the damage he's suffered. He can probably drop it after the election. But those people need get bitten once in a while.
Court has its place.
Are you crazy? Do you looking to justify them playing "victim"?
No. Only if he is absolutely sure that he can win should he do anything, and then primarily against the enablers.