All of the lost posts easily? No. We are still waiting for the last good backup (from about 2 years ago) to bring all of the posts for the users affected from that to the current site. That would restore a vast majority of the missing posts. After that it is about restoring the other missing posts one by one. The aren't gone, but a lot of the IDs related to them are missing. I believe the user and threadID are missing.
Out of curiosity, is the team looking into getting a more......reliable and consistent backup source for the site? lol