I agree with "Harlee rides horses", he is turned out on the front legs, and while the picture you posted of him from behind shows his legs to be correct looking, when a horse turns to itch notice they will always stand with their front legs a bit further apart always giving that "correct looking stance" but its for balance.
He is a little too straight in the shoulder for me, I like more angle along with a deeper V in the chest, hes a bit wide.
For reining, also I perfer lower set hocks, a little longer neck for to achieve the correct flextion in a spin.
He also appears to be a little up under himself on the front legs.
Love the color, and while its hard to give c&c on a foal, thats my opinion, he will do alot of changing though, and could grow out a little more as a 2 year old.
Keep posting his changes!