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As far as options go you really dont have a lot. If its down you have to get it up somehow. That leaves your options to either finding and fixing the problem or wedging it up with a board or something. Do you have a scan tool and/or voltmeter to test it?
In that case about your only option is to remove the door panel and unbolt the glass from the regulator and prop the window up with a piece of wood that fits between the bottom of the door and the bottom of the glass alongside the track. If you feel that is above your skill lever most shops would probably do it for an hour labor.