It was probably damaged early in the growing stage. It more than likely will be fine next year unless he damages it again.
If his pedicle (the part that the antler grows out of) is damaged then that antler will continue to be screwed up, but that is unlikely. Genetics are very unlikely in causing that deformity, and even if they are, as JPH stated, with dispersal and everything else, taking him out will not change anything.
The whole culling thing was proved to be ineffective in several studies, including a very detailed study at the King ranch in Texas.
I don't remember who said it, but I like it: "Culling free ranging deer is like taking a cup out of the ocean and saying you changed it".
Genesis 27:3 Take your bow and quiver full of arrows out into the open country, and hunt some wild game.....