This happened to someone i know...he tried to use his spare remote but still wouldnt work. Out of frustration, he held down the disarm button of the spare telling the car to un-f*ckin-lock and waving it about and stuff. Eventually, after around 15 seconds of holding the button down, it disarmed itself. It must have initiated some kind of system over ride, kind of like a fail safe mechanism i guess? So he was lucky! Total fluke!