Right Arm bend into impact

[gmbtempe]

Why do some players have more right arm bend into impact than others?

I tend to maintain the more bend more than I think anyone would prescribe from top of the swing, to delivery, then into impact.

What would cause this? What does this tend to do to the golf swing? Is this a problem with the motion of the shoulders?

I know it sounds simple, just straighten it earlier but I have found no mechanical way to make this happen.

Does it matter?