I've had success the past two times I went to the driving range. I concentrated more on releasing the club/ turning my arms over at impact. It takes a lot of timing, but it works. If I could only give one tip, it would be to concentrate on turning your right hand over your left at the moment of impact. If this doesn't work after five minutes of trying, let me know.
Why would this fix a slice? What does turning the arms over have to do with creating a path more to the right (for a righty) so the golfer doesn't slice it?