Delousing

Does anyone know if there’s way to get Moveable Type to display comments on a certain date, or some other script that would do that, and allow their deletion? Somehow I was hit with many hundreds of comment spams back on May 5th of this year, and they apparently came in so fast that MT didn’t even send me email notifications of them. I’ve been looking at old posts, and they’re infested with them. Furthermore, they aren’t even blacklistable–the URLs are nonsense strings of characters (what was that all about, other than pure vandalism?).

I’ve been going through and deleting them as I find them, but it would take a long time to look at every one of thousands of posts. It would be nice to just see comments that were posted on that date. I’m sure that it would be possible to write such a script, but I’m wondering if one exists.