Well, those first two tricks weren't actually body varials persay. The first was a fs shuvit with an opposite direction 180 rotation which cancels out 180 degrees of board spin; the problem being that this works best with a late shuvit as when done well the board doesn't move at all, whereas in this case your board rotates about 90 degrees and then starts magically going back into place because of your body spin & the game mechanic. So while the board technically lands in the grind having not fully rotated, it doesn't quite work / look the same.
For the second one, you did a regular fs shuvit, then a regular late shuvit but didn't cancel it with a body spin, so there was no "body varial", just the two shuvits.
Hope this all makes sense, good job on the clean grinds regardless of the body varial technicality stuff. :)