Is it possible that somehow the unlock button on your key was pressed (say in your pocket) to where it would have lowered the windows??

That is the only way I would know this could be done with no power in the vehicle.

__________________
2001 X5 3.0i (PP/WP/AP) Traded at 213K miles
RARE White on Black - Why does everyone get Tan??
First E53 with 215s on XOutpost!!