Training a Stubborn Akitas Recall

[welsh]

x3 on that advice, with one proviso: "The dog will naturally be excited from your movement & move with you."

This will hold true with a pup or a dog that pays attention to its owner, but if the dog is ignoring the handler entirely & could not care less what you do, then that is the first thing you need to work on: to get the dog's attention on you. If the dog doesn't care about food, toys, or any other form of reward, that's going to be tough to do, because getting the dog's attention on you can really only be done with positive approaches.

I wouldn't have that dog outside a fenced yard until the problem was fixed.

[Waftrudnir]

I have no hands on experience with this breed or any Spitz breed.
What I've heard however, is that there is a age limitation until the dog may accept any training. Good thing that you trained a lot early. Dogs (and that is not limited to any breed) that have not received proper socialization and training early in their live, will make problems later.
Dogs needs to be trained to be trained!
Instead of focusing too much on the actual task at hand, you might need to go back one step more and recreate (as far as possible at this age/breed) the foundation for training.