I have heard the same thing. A friend of mine shot a nice buck several years ago during gun season. He thought how cool, it was still in velvet. But when he got up to it and touched the horns one of them was like rubber he said. Then when he field dressed it, it had gang green. He figured it was hit by a car, and the injury made its horn never harden and get the velvet off. If he does have some sort of injury making it grow like that, I don't think it will ever grow right. Thats just my opinion. Anything is possible. He might be just fine next year, hard to say...