Someone please correct me if I am wrong but I seem to remember that the motor and the window are attached to each other by the sliding jaw. You cannot just remove the bolts from the motor. If the motor is not working would not you need to move both the window and the sliding jaw so that the jaw slides out of the window rail - thus allowing you to remove the motor? (The only way I have removed the motor is when the sliding jaw has already broken.)

I am guessing that the weight of the window on the bolts is keeping the bolts from coming out and that the window will crash if he does get each of the bolts out??

So seems that the answer is to reach in and hold up the window, remove the bolts, then move the regulator and window up and down until the sliding jaw will slip out of the rail.