I'm still not 100% sure about it. But it seems to work better than where I'd originally left off and it was nice to retrieve some of those clever lines that I'd tossed away. (Thank goodness for saved drafts.) And now I'm already pondering ways to rewrite the returned lines into something a little more plausible than what I'd put down in the flurry of NaNo.
I think I'll go do that now.