I feel your pain. Last fall a friend brought his ' 74 Super over for some end of the season work. We got into repair mode for a trunk which could not be locked. The problem was the sheathing on the cable release. When you pulled the lever in the glove compartment the sheathing just flopped around. It didn't actually pull the release. This was cured and we proceeded to close the trunk. A couple of adjustments later it closed and locked alright. No amount of jiggling, banging or cursing would open that trunk. We tried to slip a thin hacksaw blade into the gap between the handle and the lid after the cheap little gasket was removed. This almost worked but the inevitable damage to the paint was an additional price to pay AND we ended up cutting the handle as well ! A moral to the story for us was to test the release cable function with the mechanism detached from the trunk. If it doesn't release it is no big deal you can pop it with a screwdriver. MY 72 BUG
I'd rather have a partial bottle in front of me than a partial frontal lobotomy.