If I am not mistaken, your butt cheeks are in the back. So, his comments were pretty accurate.
Nice try, but “shot in the back” has a different connotation than “shot in the butt” for those of us who speak English- as opposed to those who speak propaganda. Which ignores the fact that he was hit in the left side of his butt cheek, indicating that he was turned back at the time he was hit.