Watch the guy in this video, he pushes on the door with his hip and then he's able to open it. Worth a shot.
https://www.youtube.com/watch?v=Cb-xl90ALU4
Can you remove the screw behind the door handle and get enough access that way? It's hidden behind a tiny panel in there.
Can you roll down the window?
I had a similar problem with my old 2000 Impala. It was in the shop for three days while we waited for parts. The door lock mechanism failed because nobody ever used it with a key.