Quick update - I took down part of the tin ceiling we're hoping to salvage today. Turns out that most of the plaster had been removed before the tin went up, and what was between the tin and the joists was a layer of proto-drywall and some wooden strapping. The proto-drywall (essentially plaster board) was actually doing just fine, and not falling down onto the tin at all. Clearly the work of pre-Team Whackadoo owners.
Yesterday Katherine was fretting that, even if we managed to salvage the tin ceiling, it would eventually have to come down, because we don't want our eventual spawn to sleep beneath falling-down plaster. I pointed out that the tin would catch the plaster and start to sag long before said spawn was in any actual danger, but it's a future parent's job to worry and Katherine is on it. She's a woman who takes her job seriously.
Point being, she can find something else to worry about, because there's actually no plaster up there. Which is also too bad for our friend Maura Spery, who laughed her ass off at us when we told her we were going to try to save the tin. The thing is, Maura generally knows what she's talking about, so when she laughs at us we generally pay attention. Maura, we promise to try to do something else completely insane for you to laugh at real soon.