I mean, you guys are posting alot of videos of flat spins/rodeos. tims are arguablely rodeo/flat rotations he just spins alot. A bio isn't exactly the same as a rodeo/flat but they definitely look very similar. What vinny cash does is the closest to bio that pretty much anyone does IMO.
Again, these are ski tricks, flat/rodeo/bio spins 9 or higher are practically the same thing, so call it what you want.