You lose control and flip the club when you remove your pinky. This is is exactly what you want in these kind of shots. It's not commonly known, but tour players use it quite a bit.
Putting is the difference between winning and losing. Here's what you need to win.
The arms create a circular motion around the body in the golf swing the same way they do in a baseball swing and tennis swing. Here is how to get the arms to work in the right motion during impact.
How your wrists hinge is important, but not as important as making sure you do not force positions. Here is what I mean.