When we brought the site back up it was just terribly slow. I attributed it to caches not filling up fast enough (which is always a problem) but it just didn't get faster... looked at the queries and they were huge, loading hundreds and hundreds of items. Anyway, fixed the bug and things started flying.
So now I'm going to sleep. If there are problems, report them to support.
A ton of central code changed... but for the better. 4 lines or so were deleted for every new line. Very clean now. But maybe I screwed something up in the process.