hence I posted PB Blasterin my response - but alas it did not help. I ended up getting it open by gettin a screw driver into the mechanism from the inside and forcing something that popped it open !!!
did you ever figure out what caused this? did you replace your door lock actuator, or did the problem just not happen again?
i have the same issue as you and it's been intermittent for a while but getting worse. now i can't get the door open
