Personally, he will flaten out a little bit, but not completely. He owuld still be great for breeding,my parents use to have a perlino stud and he didt have great confo but he put out great babies. I would buy him.
That's such an awful picture it's difficult to say for certain how butt high he really is along with everything else. I can't believe they couldn't bother to take decent pics of him.. Especially considering the price and his age.