My driver's side door won't open!

[PeteG]

Last night I left work (parked outside in the freezing cold). When I went to shut the driver's side door, it would not latch shut. After opening/closing the locks a few times, I went outside and locked it with the key lock, and it worked! Only problem was, the drivers side door will now not re-open.

The door lock pin goes up and down with central locking system (key, etc), but the door does not open, not matter if pin is in locked or unlocked position. Pulling on the door handle doesn't do diddly!

I'm assuming some kind of lock cable snapped, and I'm hoping I can get it fixed today. I will call dealer and my local independent guy (no longer under warranty). Has anyone had a similar problem? Any solutions to try? TIA.