I'm not sure if it's the same, but this happened with my driver's side door. It came out of the front track, and was only able to slide up part of the way (in cold snowy weather yet). I took the door panel off (remove the screws from the handle and other plastic molded parts, pull them out), being careful with the plastic clips. If any clips stay in the door, pull them out using the correct tool and re-install them on the door panel. At the front of the door is a bolt, undo that, reposition the track with the window down, reinstall the bolt. Check to see if everything is working, and reinstall the door carefully aligning the plastic clips with the holes.