Stanley the Turd - I like that.
I strongly believe that it is part of the contract that they do not attack people. We feed them and care for them, and in return they cannot attack. I feel the same way about dogs. Maybe he has seen the light because he tried it and it did not work out well for him, but also keep in mind that there are lots of well-mannered roosters going into the freezer every day because there is just not enough room for them, so there is no reason to keep an aggressive bird.
I have one Red Ranger that keeps pecking me. He has broken the skin more than once. If he were not already heading for freezer camp, I would still be putting him on the bus for his aggression. He does not have to like me picking him up, but he cannot be aggressive about it. I believe that if I let him grow up, he would probably be one mean rooster.