Yes Whip, I think that the drill by Leadbetter is the same.
Leadbetter THE GOLF SWING:
"try what I call the 'preset' drill. After adopting your
normal setup, lift the club up directly in front of you
until is at 90 degrees. Do not extend your arms away from
your body. Observe the angles formed at the back of wrists.
Now, while maintaining those angles, simply turn your body
and place the club at the top. This not only puts you in
perfect position, but conveys the feeling of passive arms,
and wrists you wish to encourage in your normal swing."
Seems like cocking the right wrist to me. What do you
know about the drill?