[doofus47]

That's not so much leaning back and throwing a hip forward as an elbow rest.
I do this while shooting from a standing position in biathlon. It does help with accuracy, especially when your diaphragm is flopping like a fish out of water. Biathlon, however is a 22lr being fired from an 8 lb rifle.
When hunting with my 30-06, I absolutely have to lean in.
I could imagine that if someone started off shooting 22lr or .223 ARs in a competition scenario might try to shoot a full-size cartridge from that position once. But I assume that it would be a self-correcting mistake, sort of like the mistake of bringing your eye too close to your rifle scope. You'll only do it once.

Very helpful topic. Although I will probably be present when my wife starts shooting, I'm definitely going to be on the Kraigwy plan if my wife decides to get real training and step out of the picture. I have worked with her on several non-gun related interests we share and I've found that I can be the world's worst teacher for her.