If your remote is actually working the solenoid release, and the trunk lid is simply not popping up to release from the latch then there is a solution. It's a small spring that, when installed, helps overcome the spoiler weight. Normally the compression of the trunk weather seal and its subsequent expansion is what allows the trunk latch to release. Spoiler weight seems to overcome this upward force, so the spring provides more, available from Ford for a couple of bucks and screw mounts to trunk lid.
