Get a small wedge or small airbag but a small wooden wedge always worked for me and go to the top right corner of the door if it's the drivers side, if passenger side top left. install wedge, but be careful of the seal. wedge it inbetween the face of the seal and the metal frame of the door. install wedge just far enough in the door to create a space big enough for you to put something in there to unlock the door from the inside. that could be a lot of things from a stick to a metal rod etc. your door should flex enough without breaking the window or harming the door in any way I've seen it done and have done it several times. it is important you only install the small wedge far enough for whatever your going to place in there to unlock the door, if not you run the risk of fixing something else. If you have a small airbag or like a blood pressure cuff you can install It flat under same corner of door and pump gently and slowly until u have a space big enough to manually unlock door from inside. Good luck.
