[SECGolf]

I have videotaped my swing and have found I have a faulty pivot.I am dead on plane with a beautiful looking flat wrist at the top.On the downswing I don't turn my hips at all and I think this is what has lead me to hit the ball short and right.
Would plane line tracing help this? Like I said I am really on plane at the top so I know I'm close.My hips don't move and the club moves around my body on the downswing because my body is in the way.Major downswing blackout.

What should I do?

On the downswing I don't turn my hips at all.....
GOOD! INITIALLY, that's the last thing in the world you'd want to see.
INITIALLY, you should see the right hip SLIDE (clear, get out of the way, make room for the right elbow). Immediate turning would create a HIP ROADBLOCK.

Would plane line tracing help this?...Yes, without a doubt. If you go to top, the right hip will be FORCED to do something so you can indeed trace a straight plane line. That something is SLIDE. If the hip does not get out of the way you can't trace a straight plane line. If the hip GETS MORE in the way by turning, you won't be able to trace a straight plane line.

And there are no reasons above not to independently train the pivot. Why would you want to place such a restriction on your learning?

Not clearing the hip causes throw away , resulting clubhead lag pressure loss.
So monitor the fact that you maintain clubhead lag pressure.