It's amazing how attitudes can change when there are members of the general public around. I'd guess it's pretty hard to play both the victim and be a rude unreasonable a-- at the same time. I'm glad you were able to get some of your and the kids' stuff.
Sorry to hear about the in-laws' reaction. (It sounds so familiar. For some reason, it's easier to just roll my eyes at your in-law's poor-us stance and shrug it off than it is to do when dealing with my xIL's.)
Happy New Year, Pippi. Wishing you all the best and a house filled with light, love and laughter!