This version of a forward fold is especially relaxing for a yin yoga practice because it is more stable than a traditional narrow stance forward fold and will allow you to feel a stretch and relief in your lower back.
Most of bodybuilders only rely on traditional squat, and that's a good thing, we're not saying it is not, but what we can suggest is to try and use more squat stances (wide stance, narrowstance and shoulder - width stance).