"five-year ban from the Nation Elk Refuge, Grand Teton National Park, and Yellowstone National Park. He also lost his hunting privileges for five years and was ordered to pay $15,000 in restitution to the Wyoming Fish and Game Department" Additionally, he received a felony charge for violating the lacey act which will negatively affect him for the rest of his life.
Seems pretty harsh for caching antlers, but it is pretty simple to just follow the rules. This is his second time being caught, so almost certainly not his second time illegally caching antlers. So I would say the punishment is fair and hopefully a deterrent to others.