Why do I have a door in my living room?!

Well, that would be because as I came home from work tonight, it fell completely off the door frame. The two "arms" still held it upright, although it was down a step and not beginning to be where it should be. It was too heavy for me to hold up and take the pins out while the pressure was off, so I called my neighbor, poor guy. He was flabbergasted, but held the door up so I could finish disconnecting it. I guess it will live in the living room until I can figure out what to do about it.