There are quite a few threads about removing door panels & that is definitely the route to go. Then it looks like you need to make a trip to your local PicknPull, salvage yard, etc., to see if you can find another handle. My kids were always pulling the handles off my 124's. I practiced door panel removal & handle replacement on a car that I could see was going to the crusher at the PNP yard in order to figure out how to do the task. That and some pointers from various MB websites & I bet you'll be reporting back that you fixed the handle.