After being inside the red house that is raised above the ground slightly when the server restarted, I logged back in to find myself under the floor and for some reason the gun I was carrying was unequipped and dropped on the ground below the floor of the house.

I was never able to try and recover my gun because I also received an "Authentication Timeout" error from that server each time I tried to log back in (after a second or two).

I was able to get free of the house - so I could log in to a different server and be able to move around fine, but I lost my gun inside the house of the original server.