As far as I know, most thanks go to Aussie, John C, and Geo.
Other than sending up a red flag (and opening the "emergency forum" again--see the top of the thread, all, in case anything like this happens again), I didn't touch a thing. From what little I can gather, it sounds like it was just a "hey, what up?" call to the host, thankfully, and not a technical disaster.
Which, since I'm really glad things are back up and running, is a good time for a polite round of applause to the people who actually "make site go," I think.