Well, not really, I CAN explain it, I choose not to because it would be rather lengthy. I can show you easily, as in "A picture is worth a thousand words." A demonstration is worth 10,000 words.
Really, not only have I seen it performed, I can perform it at will. I'm not going to call it "the proper technique," because your technique is just as valid as mine, not really mine, I didn't invent it..
To perform it the way I am talking about, is to turn as in a turning back kick, you body does not bend to the sides at all, but to the back, or from the perspective of the kicker, forward, remember he is now facing away from the target, shoot you fo out to a little more than off center and hook the leg and continuing turning the hips to generate torque, returning to your original position. Done properly, you will not hit a person to either side. Yes, I am positive it can be done this way.!
Sorry it keep telling me to add one more character.