I wouldn't touch that horse with a 10 foot pole. I'm not some intense conformation person, but those hocks look waay too straight. I'm also a believer of the three rule, look at a horse at three weeks old, because he's balanced enough you can see his gaits but he hasn't really started to grow a ton out of proportion. Three months old because he's matured and you can start to see what he's going to mature like. Three year old because he should be ready to break and his joints will be closing and he'll basically just have the last stages of growth and filling out to do.
I'd say the foal is about 3 weeks old and that hind end is WEIRD.