This reminds me of an associated problem, and its solution: Driving the screws up from below, one sometimes pops up through the floor surface. This is indeed a problem.
Since I drive six or ten screws at a time before going upstairs to check my work, I have a hard time knowing exactly which screw I see peeping through up above. When I go back down, which one should I back out and reset?
Solution: I suggest that anyone else with this problem merely run a wire from the nearest outlet to the visible screw tip. using an alligator clip to attach the wire to the screw. Then go back downstairs and, using another wire connected to a good ground, touch the screw heads one at a time until you find the right one.
Somebody try this and let me know how it works out.
Charter Member of the VM Smith Memorial Park Committee