Always a good idea to get rid of an agressive dog. I was just reading a story about a couple that had an akita mix and it had nipped their children in the face twice. They wrote to this website asking what they could do so they wouldn't have to get rid of the dog because the dog was a big part of their family. Now how stupid is that?
Well, you can sentence the dog to live in a pen or yard with no human contact, but that doesn't sound very humane. Much better to give the dog away to someone who doesn't have small children and can care for it. We had to do that with one dog- a shepherd/lab/collie mix that used to go after our young son. The dog thought it was a game to nibble on son's ears.