The window regulator cable is most likely chewed up. This is very common. Grab hold of the glass and pull it up. Use a wedge to hold the glass up. Remove the door trim and membrane. The regulator will be pop riveted to the door. Drill out the pop rivets to remove the regulator. Replace with a new one.

I would do some other checks before you condemn the motor. Pull back the rubber boot that connects the door pillar to the door and check for any broken/fractured wires.Also check the wiring to the large multiconnector on the motor..Have you tried operating the motor from the key in the door and using the global close system? The only way to undo the drop glass attachment screws,is to cut the steel wires on the regulator and move the glass by hand.This will wreck the regulator mechanism.