I was thinking in terms of the club/hands not going back as far as a full swing. If you are laying it off in the transition to prep for the tumble on a full swing, what needs to happen in a shorter swing that has a transition earlier than normal?
There's a few ways to hit a less than full shot. One is to hit it lower which shouldn't fly as far, therefore the laying off is standard. The second is to take a full swing with a little less apace so ditto on the laying off. If you like to shorten your arm swing, you'd be wise to just lay it off earlier.