This being my first outdoor, I kept an indoor going too because all I kept reading about was everything that could go wrong. So I suppose I have the ability to lose this one entirely if I choose to. But the rest of my crop (four plants) is doing poorly because of insufficient sunlight, so I'd rather not lose this if I can help it -- it is the only one that has decent colas. We're also not at all opposed to edibles and tinctures, so nothing I can use will be wasted.
There's a hydro store not too far away that opens at noon, I'll run over and get one of those hanging basket things since these buds will be too chopped up to hang normally. I'm not sure how much I'll take down or if I'll leave anything to continue, I'll decide that as I go. I have a Chemdawg in the same structure, its seems fine, its buds are not nearly as dense though. I'm going to try and hang an extension cord (or two) out a window and see if I can get a fan in there to keep the Chem dryer for the rest of its time.
I think it was just a perfect storm; this plant is at the north end, it has huge dense sticky buds, and apparently its genetics left it susceptible to this rot. I live in Oregon, every kind of imaginable spore is in the air all the time, so while I will be careful as I take it down, this is not a hermetically sealed environment. The spores are everywhere, and will be everywhere. Lots of lessons learned.
Thanks again to everyone who offered help, it is much appreciated.