I don't know that I've ever seen that shydude picture before. I assume if it is a small part of a larger picture that only the relevant part of it was shown here, but I'm still curious about it. A quick look through his gallery ended with me not seeing it, so I either overlooked it or it's from a source other than his deviantart gallery.
And on the subject of content, if anyone likes photo manipulations, here's a photo morpher who has a fair deal of morphs centered around the butt/hips.
http://bts85.deviantart.com/gallery/28452792