Originally Posted by Wadsworth

If the pressure release procedure does not work, you can go after the pneumatic trunk lock from the license plate light. Remove the two screws and it can be popped out. The driver's side is the fob release, move cam with screwdriver(up/down).
The passenger side is the safety lock when opening top, move with screwdriver(left/right). There are videos on this and good written procedures, Google search.