F1ach: Can you not just go to the relevant posts yourself and delete the contents?
Because I requested that my account be deleted and the posts removed because I felt I was not being treated fairly, and was denied the opportunity to respond, or at least strongly cautioned not to respond, I felt that this was the fairest way to deal with the situation without forcing anyone to lose face.
Instead, my account was deleted, but my posts were not removed. Not having an account precludes me editing/deleting my posts.
Anyway, some progress was made: Marcin Mormot did follow up with me about looking into the matter. Unfortunately, I've heard nothing further, but hopefully he will follow up sometime soon.
Thanks again to Judas for his assistance with the issue.