Anyway, so that hurt, but what ended up happening is that though I cut out an 11000-word sequence, I had always been dubious about it, and as soon as it was pasted into the cut file (always always always keep a cut file) it was like my novel just sort of billowed and filled with air and became light and easy to write again. All that unwieldy ballast was sinking the ship.
Why did I keep going even though I knew that sequence was a wrong turn and had dire pacing consequences? Well, duh. I’m an idiot. (Okay, and also that section was cool. But it just didn’t fit for this novel.)
It took my writers group the Mighty Cryptopolis to set me straight. Now I’m aloft again.