With the buck in the second still photo he is turned (front) with his back leg kicked out behind him making the arrow appear that it is sticking out at a different angle. I bet if you was straight on behind him and the buck not turned like he is, I bet the arrow would be tucked up right along his body.
I also agree with Gern. That buck might be alive now but hard to say if he will fully recover enough to survive the winter.
Either way that is still amazing and still sucks.