I did retrieve my own stuff, but the many links made back to the archive in the nine months since the crash are now all dead. One guy (aside from me) down in the RP section was just restarting a game that he ran last year. I think he downloaded all of his stuff, but he can no longer easily refer new players to the old game for background. As you said, it's just an inconvenience, but one that would have been nice to know was coming. Archive.org may still have some links. If they do, I'll let you know.
EDIT: It looks like archive.org didn't crawl anything deeper than the index. Ah well.