Stop delivering the club with your right arm
The instructor points out that many golfers feel they need to hit the ball with their right arm at impact, trying to deliver the club head with it. He says doing that leads to early extension, dumping the club, or hitting on top of the ball, because using the right arm or hand opens everything up and prevents rotation. His correction is to get the body out of the way and let rotation deliver the club instead.
Channel: Micah Morris
Watch official source at 1:54Why this context matters
Coach is analyzing the host's swing on video and framing this as a common fault.