Honestly, I would have been coming down the stairs with a shotgun had I heard it in the middle of the night.
I just put the thermos in the dishwasher. It appears to be fine. I have a feeling I had just barely put the lid on when I had it sitting on the counter because the threads are fine... including the lid that damaged the ceiling. Had it been fully tightened, I think there would be imbedded metal in my walls because it would have blown the metal to shreds.