With longer spurs to work with, that wound could have been deadly!
I just cant have this uncertainty and enjoy the chickens with grand children too...
Prayin someone with more experience and understanding steps up soon.
I have grandchildren. I will be willing to go through many, many cockerels to get one who will behave.
Aggressive roosters go for the eyes and can easily blind or maim a child.
Solve for peace of mind and safety -- eat him or sell him with full disclosure of his aggression.
Since Silkie bantams are sold straight run there are bound to be some good-tempered Silkie boys around looking for good homes.