Rear Window Wiper Washer Motor problems of the 2010 Ford Escape

Simply closed the rear hatch of our 2010 Ford Escape and the back glass exploded in our faces. There was nothing in vehicle that hit or contacted the glass whatsoever. There was no extra effort used to close hatch. Simply closed it as we always do (not slammed) and the glass blew up all over us, our groceries and the interior of vehicle. We went to dealership and talked to service manager who replied "it was because you live on a dirt road". I said, "so if you live on a dirt road you should avoid purchasing a Ford Escape?". He had no reply to this only said Ford would not cover the damage. There are thousands of Escapes with this problem online and nothing seems to be getting done about it. We had to replace the window at the cost of almost $500. 00 with no guarantee it wont happen again. Looks to me like the weight of the rear wiper motor over the latch is too much weight and causes stress on window when closing.