Rooster too aggressive? Hurting pullets
His hormones are raging with the increasing day length, and the pullets are not ready to mate. I would remove him until the pullets start laying. If it continues to happen, he would then become soup.
As you know from your first bird such injuries generally heal quite well. The 'hanging skin' may dry up and fall off or it may become scar tissue. Personally I would not remove it.