That must be why they call you the three legged bonsainut!
Seriously though. The concept does work. I've never tried it on a pine but you can take any tree and wound the cambium and it will go into overdrive to repair the damage, and in the process expand the girth of the affected member.
You just have to be sure you don't wound it so badly that it can't repair itself. Lest it fall off and never work again.
Tony