Rob the Elder,
Please ,do you have the post for the use of the scewdriver and how to open stuck buttress?
This has cause a lot of damage to are Roadsters due to bad service training.
If you pop your buttres's and look down into the hole, you will see a wire on the side toward the center of the car. This wire engages with the slot in the metal locking portion of the buttress - the part that penetrates the trunk lid.
When you want to release the buttress, a signal is sent to a relay that energizes and basically pulls the locking wire toward the center of the car and releases the buttress lock, at which time a spring acts on the buttress swinging it up and forward to clear the trunk lid.
When the buttress fails to release, it is is generally because the plastic fitting on the end of the release cable fails. It's similar to a brake or clutch cable on a bike. The eng of the cable housing is mechanically held and when the cable is retracted, a fitting on the end pulls on the locking wire, moving it inwards and releasing the buttress lock. If the end of the cable comes detached from the wire, it can not unlock the wire.
If you manually move the wire, with a thin tool lice a small Phillips screwdriver, the the buttress will pop up.
Get a small screwdriver. Release the buttresses and view down into one of the holes. You will see a silver wire there. It's the locking wire. Insert your screwdriver into the hole and push the wire toward the center of the car. It's a little stiff but you can move it. Get a feel for where you need to hold the screwdriver and how much force is required to move the locking wire
Now, while holding the screwdriver I'm the hole on the side with the lock, move the buttress down and observe how the nut tress mechanism will deform itself to accommodate the screwdriver. If you wish, you can lock the buttress with the screwdriver inserted in the hole, then by pushing against the wire, unlock the buttress manually
The only tricky part of dealing with a stuck buttress is getting the screwdriver inserted into the hole without scratching the chrome trim piece. But you can do it. Just push up slightly as you insert the unlocking tool of choice, and apply firm pressure to rotate the plug out of the way while you insert the tool