Again, it's not magic... it's physics... which I guess i basically magic to most people.
I've spent a lot of time reading about snowboarding online, and this is honestly the first time I've heard of this concept. Sir, the voodoo that you do...well, I dig it.
Now I've got something to work on. I had been close to giving up on jumping due to all my ragdoll to scorpion fails. I have no problem with turns or control, it's just the unweighting process that gets me. I feel the exact same way, I tense up and my legs straighten.