I have about 2,500 hours in Mooneys, having owned both a C model and a J model. I’ve never had a door problem – until yesterday. After a short proficiency flight, I landed and pulled up to the self-service gas pump and discovered that I couldn’t pull the door opener lever back. It was as though the door was locked. The only escape was through the luggage compartment, and that is pretty tortuous. I patiently waited for another airplane to arrive at the gas pump, but, after a few minutes, decided to call my wife to help me out. She verified that it was locked, and when I passed the door key to her, she unlocked the door and I escaped. Although I have several possible, but to me, unlikely ideas about the cause, I have no real reason for this to have happened. It has obvious safety implications. I’m curious, has anyone else ever had the same problem? How about ideas about what caused it?