I just notice that during my downswing the toes on my left foot grip the ground (my shoes) for dear life. I also tend to not get me left leg posted as much as I would like. I assume the two are related.
In thinking about this I assume the toes should not be involved in any of the motion, even at the start of the downswing. Is this correct? To feel what I've been doing just tense your toes at the start of the downswing like you are trying to hold on to the ground.
@jimcoene - Check your setup. Start with both feet and both knees flared outward, flex your knees until they are over your toes, and then push your butt out until the weight is re-centered in your feet from front to back. This action stabilizes the body, engages the ankles as @Nocona Colt Abernathy says, and establishes a desired resistance against the ground (facilitating a force that will be called upon through impact).