Golf Digest April 2012 page 111
First, lets agree on the meaning of solid: clubface square to the target line at impact and ball contact on the center of the clubface.
Second, the content of this instruction has NOTHING to do with solid contact but instead describes a bizarre set of contortions to achieve a swing that has the club sweeping along the grass instead of crashing into it. There are much simpler and more sensible ways to achieve the sweeping action.
Bottom Line: If you are looking for "solid contact", look elsewhere. If you are troubled by your swing digging the clubhead into the turf, look elsewhere.