Or, if the windshield is cracked, break it out and get inside that way. If the windshield is good and you don't want to risk breaking it, try coat hangering the window crank to lower the door glass. Pull the trim cards off the doors to get to the latch. What are your plans for the car? If it's going to be taken apart, you may also just pull the front fenders and unbolt the door from the hinges. That should give you enough movement to reach in and roll down the door glass. It might even help the latch come loose.
