A week ago, the driver door on my 98 Civic EX wouldn't unlock by remote. The passenger side worked fine, so I crawled over. The driver lock would not operate from inside either. I tried it 20 minutes later, and it was working fine. However a week later, the lock is now stuck in the unlocked position and won't budge from the inside or out. I can set the alarm with the remote, but I can't lock the driver door.

Any thoughts before I take it in for repair? Thanks.