I have a '97 extended cab 3 door and I just installed by sub today and it sounds great but....... I just realized that one of the rear speakers is biotched. It's just my luck that it is the left rear, which is not really in a door but it has a similar panel/ interior cover.

So my question is, how do I remove that panel to expose that speaker and change it out. It looks like that must be some trick to it. What is it?