Sure thing, Rusty...
Your assment is pretty spot on. Wacko "reverts" to the counter-rotated, too much lead in his stance when things get trickier...
And that's when he skids more. He also has a bit of the "slp" the inside ski against the stance skii, to "force" the narrower stance, and does sometimes displace/skid the stance ski a little from that as well.
As far as PSIA "levels", Hes an 8, usually, and a 7 on a bad day. More 8-like then 7-like, since he worked on his releases more... I used to be able to still see the bases of his skis when he started a turn, especially in cahallenging snow/terrain.
In the world of PMTS, alot of attention is paid to figuring out the Single Most Important Movemement, or SMIM. The movement change/addition that will give the student the most sucess in an immediate change in their skiing. Of course most instructors (taht are awake, and care) have been doing
He rarely does that anymore. This as his SMIM, but now, working on pulling back the inside food, and getting rid of that big lead is his most important change.
I agree about him being a bit to squatty at the release, then he just stays there, low, little or no extension.
He needs to extend into the holes in bumps more, too. Esp. when they get bigger. We'll get back to the extension.
¯¯¯/__ SnoKarver email@example.com