Same thing happened to me this weekend (was working on audio install). Luckily, I had opened the rear drivers side window on my coupe so the gap was big enough to let me stick a long steel pole so that I could hit the unlock button. Let me give you a little advise, DON'T LET YOUR WINDOWS OPEN. It only took me about 2 minutes to reach the unlock switch from the back of the car with the alarm blarring.