Note that the date will be wrong and the security will be set to private. You'll have to fix those by hand.
If this tool works for you, let us know in the comments. If it doesn't work for you, let us know, too, as well as filing a support request in our support center.
Our restore this afternoon fixed most everything, but a few things went into the database corrupted because of the previous corruption, and replaying them onto the clean database just brought along the corruption.
Also, off-topic comments to this post will be deleted, since we really want to hear from affected people, and not "first post!" or "great userpic!"
We really appreciate everybody's patience and support through this. We're very sorry this has turned out to be such a pain. If it's any consolation, we're all the wiser now.