I don't know what it was, but after meeting with my Writing Buddy last night, I've figured out (mostly) what's next-ish, as of this morning. There's a window in that corner I'd written myself into, and I shall climb through it. It's not next next, but close enough to next that I have something to aim at.
Also, I managed my 250 words yesterday, and made up the deficit from the day before as well. If I make my 250 today (which, frankly, shouldn't be a problem), I'll crack 35K total.
And now I must research heart-lung machines. Because...yeah. *evil laughter*