The folks at Borders just called to say that they have found my bag; the guy I talked to didn't know where they found it, but it's there. Which means either it didn't get stolen at all (in which case I don't know how it managed to run away from where I left it) or the person who took it finally got around to processing that s/he didn't know how to knit.
Or all they have is the bag and the project's not in it; I didn't think about that till just now. I should call and check, because if it's just the bag there's no use going all the way out there tonight.