Having suffered the indignity of yogaing myself from the passenger seat to the driver seat in public view several times,

yours truly might be able to help here.
Get a torchlight and a long steel rule. Wind down the window and pry the window rubber seal apart with your fingers. Shine the light into the cavity just to the left of the keyhole. About 20cm down, you will see some linkage mechanism. Use the ruler and gently poke willy-nilly. You might just hit the sweet spot after a few goes. The door will magically, voila, pop open. Trust me, I have done this many times.
Remove the door panel and gently peel off the plastic sheet. Look for a spring parallel to the window sill at the top. That spring should be there to hold tension on the door opener. It might still be dangling on one side. Simply latch the other side back onto to the linkage. If you're not sure how, remove the passenger door panel to see how. If the spring isn't there, it must have dropped into the bottom of the door cavity.
My spring never came apart. The door jammed due to a worn lock. I have since installed a remote opener.