GZ's problem seems to be mainly in his shorter kicks. It looks like he does something weird in his follow thru's when he kicks the shorter ones. The ball has a lot of "english" on it ... almost like a golfer who has a bad slice. It looks to me like he is trying to power thru the kick as if he has to drill it 50 yds, but then pulls back just a bit ... kind of like a chip shot in golf when you are trying to make the ball come back.
Greg has a powerful leg. It's all mental. Maybe GW's wife can help him with some hypnotism or something to get him to relax a bit