Hi there - my left rear door is stuck in a closed position also and won't open from inside/outside. It hadn't been opening from the inside for almost a year (which I put up with) and then recently the outside handle/carrier came dislodged and now it won't open at all! I tried applying a little bit of downward pressure to the outside handle to try to seat things, but no luck, it's still stuck.

I attempted to remove the plastic door card with the door in the closed position (removing the seat padding, etc.) but I am unable to get it out. How did you manage to get into the door and open it? Thank you for any insight.