Here is a picture I took last night when I found it after rolling my window up (it had been down all day-sorry for the not so great photo).
http://pic20.picturetrail.com/VOL1373/13685773/24611517/413285852.jpgcablesmith, it's in about the same spot as yours, it seems. I know I've got a loose connection in my drivers door (bottom window rear window rail) that I've got to get in there and weld tight, and I was more worried about something like this happening over there, but until I take this apart, I don't know what could have happened. Just wondering, does anybody know if the glass coming from CP, LMC, etc. is tempered? My truck is parked with the passenger side to the south (one way street here), and this may be the first time it's gotten over 80* since I put it in. Just curious if this is a heat thing from the inside of the door of a black truck (??)