A little late to the game, but I would have to say Levy's main issue is lack of Hip Angulation. this causes his leaning in.
A form of angulation that involves flexing in a manner which creates an angle in the pelvic area, between the torso and the upper leg. Done properly, body mass above the pelvis moves laterally, towards the outside of the turn, shifting more weight to the outside ski.
Hip angulation is not the most intense form of angulation a skier can use, that award goes to knee angulation, but it is the safest. When employing pure hip angulation, the outside leg is kept quite extended, devoid of knee angulation. It’s called keeping the outside leg “long and strong”. The bones of the upper and lower outside leg become aligned, maximizing the skiers ability to withstand the high turning forces encountered in aggressive skiing.
When angulation is required during high force load skiing, such as when speeds and edge angles are large, hip angulation should the go-to choice.
Note: because flexion potential in the pelvic area is higher in the forward direction than it is laterally, hip angulation is most effective when combined with counter. Counter involves rotating the pelvis towards the outside of the turn. By rotating the pelvis outwards, hip angulation can be achieved through forward flexion.
tis would be priorty #1 if I was helping him along. A lot else that is out of place would fall in line.
And a bit of knee angulation too.