it makes perfect sense. you can take a wooden dowel and stick it down where the 12 gram goes and put it on the edge of the nutsert (don't touch the screw) and lightly wedge it enough to keep it from spinning and you should be able to back out the screw. that has worked for me before.
you can also pull the trigger frame straight up while turning the screw. that will sometimes keep the nutsert from spinning. that has also worked for me.