I am assuming that if stop every thing while you pinky is standing at attention you can MAKE in go hover over the string - it is just like playing a note, but an 1/8th of an inch higher.
If so, it is a matter of playing the scales super ssssslllllooooowwwwwlllllyyyyy while focusing on keeping your pinky in-line.
Five minutes or so every day, for a long time and you will eventually gain some sort of dominion over your recalcitrant digit.
Shadow