We have about a dozen posts that cite, as a contemporary authority1, a prominent Rabbi who was a respected posek at the time the posts were written, and who has since been convicted of abusing his rabbinic position to hurt many people and is now incontrovertibly (to my knowledge) a subject of disgrace in the Jewish world. Should we do anything to these posts, or those that cite other authorities who have similarly fallen from grace?
Delete the post.
Edit out any parts of the post that rely on this rabbi's authority.
Edit out any parts of the post that rely on this rabbi's arguments or citations, too.
Edit the post to include a link to the rabbi's Wikipedia page.
Edit the post to include a footnote saying that this Rabbi has since been disgraced.
Add a comment encouraging the author to rewrite the post.
Does it matter if the post is about a subject matter related to the rabbi's crime?
Does it matter whether the fact and interpretation of the rabbi's misdeeds are controversial? What standard of certainty/proof would warrant taking such actions?
What level of severity of misdeeds would warrant taking such actions?
1. I'm not averse to naming him and discussing his case here, to whatever degree necessary. However, I think I've described the case well enough for the purpose of this question, and I'm hoping that this post will generate guidance for both dealing with this case in particular and for evaluating any similar cases.