same thing happened to me after my first accident, the mechanics forgot to put back a bolt and 3 weeks later the window was just barley on, i took to dealer and they didnt want to warranty it since i crashed on that side(such BS). so i went home took inner pannel apart and saw that the window was not alligned and that the bolt came off, put bolt on aligned window and fixed my self in about 25 min. while toyota had my car for 6 hours and they told me they could fix it and it would cost me $175 to fix.

it was the far middle bolt on the right.

 

Yeah, I've experienced that on occasion. Wind buffeting through the one open window probably tripped the safety thing on the auto-up.