If he's human aggressive and you have a better rooster, then doing something different with him would be better. He won't change but become more aggressive. A Barred Rock is a big bird to have attacking you. He'd be harder to defend against and he could do more damage to you.
I've had roosters and geese get in fights before. It's best to keep your chickens separated from your geese, as things like this can go both ways. From my experience, it was usually the goose going after the chicken with most times the goose nearly killing the chicken. With a rooster, once it...