As you apply torque, via the properly directed thrust of your swing the transfer of kinetic energy will occur automatically. You don’t consciously decelerate, you consciously apply thrust via your pressure points.
tobell: Can one practice to develop this 'disconnect' swing without a ball, or do you need to actually 'hit' balls? I know things must be VERY precise as it's only happened a couple of times to me. But I do know that feeling and would recognize it if it happened again. Is the 'disconnect' the same thing that's referred to as effortless power?
Sorry for the incessant questions. Like peeling an onion. Knowledge begats more questions.......