Just a couple of thoughts:
There is license plate illumination on the underside of the license plate "cove" adjacent to the trunk latch button. After removing the clear plastic lens and the bulb (and disconnecting the battery!), is there any access to trip the mechanism from that point?
Inside the soft top compartment there is a 2–3-inch round hole at the center of the rear wall that may give a little access to the trunk area. It there a way to trip the mechanism from there with a length of rod?