Feel: big body turn, short connected arm swing
The lesson's central swing thought: make a big body turn while keeping the arms shorter and more connected, so the arms do not swing and out-race the body. The coach frames the whole fault as the arms out-swinging the body's turn, and the fix as letting the body's turn dictate where the hands travel rather than the arms running ahead.
Channel: PorzakGolf
Watch official source at 10:40