Interesting that he would ask about the ring. He may very well have been testing you to see if you actually knew where he had put it or he just forgot...but my money is on the fact that he knows exactly where it is.
What is w/these mlcers wanting to sell their homes and purchase new and bigger ones? My xh wanted to do this as well. His excuse was that he wanted to move closer to the city to go see ballet performances and other activities. Well, the my first thought was...what did he know about ballet? Nothing. They want change and don't care how they go about it. I'm glad you just listened and didn't remind him that his name isn't on it. Sell only if when you are ready to do so.
I think your h is still confused and is talking about anything that comes to mind. I also think he's looking for a reaction. You handled the evening quite nicely. It will be interesting to see what he comes up w/next.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.