I have no idea how it happened. I got out of my car and when I went to close it... BAM!! It just shattered into a million pieces and fell inside the door frame. My rear windshield blew on me too a couple of years ago. I think some of the grid lines for the defroster were scracthed which in turn sent more power to the other lines... thereby causing a big thermal stress in a certain spot. It scared the hell out of me when it went.

In other news.. I took all the seals/molding off around the door and was able to get the metal channel out that the bottom of the window sits in. Will I be able to just slide a new one in there?