I was on a sleeper that (slightly) derailed in STL coming back from Christmas break one year.
It was, to put it politely, a cluster - they pulled all of us out and put us in the diner (it was after 10 pm, IIRC) for a while while they figured something out.
First we were told there were "spare" rooms in the transdorm, which was OK. Nope....they had been sold en route.
Then they told us Amtrak was "letting" them leave the coach that was to be cut off on, and we could go in there. Okay, fair enough. They helped us carry our luggage in there
I had just nicely gotten sort of asleep, when they came in - nope, Amtrak was telling them to cut off the extra car NOW, here was a seat tag, good luck, don't forget your luggage!
No help at all - going into a full coach car at 2 am to try to find a seat was NOT FUN. I lucked out, a couple had put their small child in the empty 2 seats in front of them and the mom grabbed up the child and told me, "Go, sit there, it's okay"
But it was still miserable. And dealing with Amtrak customer service was frustrating, I kept getting shunted around. Finally I did get the sleeper refunded and a $75 voucher for my trouble (I had gotten a motel room at my destination - I had a 2 1/2 hour drive to get home, and with almost no sleep and it being 7 pm (instead of 10 am, like we were supposed to get in), I had decided there was no way it was safe for me to drive home that night.
I hope this means Amtrak has their stuff together better with bad-ordered sleepers now. I would not have minded NEARLY so much being one of a few passengers in an "extra" coach, but we were just dropped in regular coaches, no one even offered to help us carry our luggage.