DC300 basically was spot on 100%. And I think it's because we both hit it a long way, we get the same things going on in our swings.
My driver swing is too long but I have no problems. I'll try shortening it over the winter just to see but I'm fine with it...I think I shift my weight better whereas with my irons I tend to stay over the ball and that leads to problems.
So my iron swing...I stay over the ball and my over swing would sometimes get my weight going in the wrong direction...leading to a reverse pivot. To "save it" I would release early and flip it. That would lead to what DC was saying...pulls, pull draws or high and right. The early release would give me an approach angle with a 9'iron of zero or +1 degree instead of -4...about what it should be.
I've shortened my backswing and its help fix the early release, any over the top move and flip. It is a much easier swing to do too.
I played today and for some reason fell into a funk where I started hitting punches because of the shorter backswing. I figured it out, that I was doing that...just part of the process getting used to something new.