Sometimes if you log out while being in a building or near a building, you'll appear in non-enterable room next time you log in. Sometimes you'll be able to hop out but most of the time you just have to wait until you starve to death to start playing again.
Also sometimes it seems to randomize your character looks when you spawn again near the coast.
VIDEO PROOF:
http://www.youtube.com/watch?v=CPJ1f2L4OjA