Great render. Superb POV. Fantastic lighting.
Oops, sorry.... I'm in the wrong place. :O)

Seriously though, V4's butt does get a bit unrealistic at extreme bends - it's one of the joys of working with polygon people. A couple of random thoughts...

Have you got "Use limits" set on the figure?

What body parts did you bend to get this position? It looks to me as if you have backwards bend on the abdomen and forwards bend on the thighs. Plus a doggy camera angle.

Err... Dodgy, I meant dodgy.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)