Weird you brought that up cause I got a similar problem with my left pinky....it's got a mind of it's own -- when I press down with my first finger, my pinky shoots out totally straight and locks in position. It's been a great hindrance to playing faster stuff but it's also opened up a whole bunch of other alternate techniques I've been forced to use to compensate for it. If you find you can't physically do something, try some kinda alternative way of playing it. (use your nose if you have to)
Schmange