I would tend to disagree, the backbone is very pronounced in the area in red. You can see the tent like shape of the body in the saddle circled. I have never heard of having to wait until a snake defecates to feed it, every 2 weeks for a 1 year old snake is not often enough. It should be on a every 7 day schedule. :O
https://ball-pythons.net/gallery/fil...1/backbone.JPG