Option 1: (PullApart)
The entire panel needs to come off, which means big torque bolt at the top for the seat belt. Then if you carefully pry away the panel, it should snap out of the clips. Once the panel is out of the way, you can pull the cable back with some pliers and dis-engage it from the lever mechanism.
The entire lever mechanism can then be removed by one phillips screw at the top, and the bottom of the mechanism sort of just slides into the frame, so just lift it upwards after removing the screw and you should be good.
Option 2: (My Fiero)
Come over to mt place and I'll show you exactly how to do it on mine, as my interior panels are still off and I have access to the lever to show you. Then you can just buy my spare and save yourself at least half the work.

Panels are going back in Tuesday though, so you'd have to make haste.