I was just on after closing (or at least semi-on) this was an intersting glitch.
I was doing a last minute NPC run and moved from the stretching room to the other mansion room just at closing.
I got the MVK is now closed and connection lost messages, but then ... the room came up.
I could not see myself, but the music loaded, and I could look at my inventory and my friends list. I could also send messages ! Some of you got "messages after closing" I wonder if they will go through.
This was taken at five minutes after closing.