It's unrelated to this morning's issue. There has been some wonkiness for quite some time now when it comes to mods/admins splitting and merging threads.
When we get in to upgrade everything in a month or two, I'm going to submit a ticket to Jelsoft to see about how to fix this problem. It may be as simple as resetting all the counters. It might be as ugly as deeper/bigger database problems. Might also be some sort of mysql or PHP misconfiguration. I just don't know enough about this stuff to be able to speak intelligently about it.
What I can say is that there's nothing in those pages. As far as I can tell, all the posts that are supposed to be there are. It's almost like some moves/splits have sort of timed out during the process -- after the content has moved, before the old thread was told that there are that many posts that have been removed, creating a 'disagreement' server-side, in regard to what to display.
That's probably totally wrong though. :)
For the time being, ignore it. And do me (everyone) a *huge* favor by trying to avoid creating or fueling scenarios that require mods and admins to split threads.