I really like the bi-color GSD. I have seen this dog on other videos, and he would be a good example of dominant. In this video not so much, but in other videos, he barely has his legs on the ground at all, they are always on the decoys leg.
There are dogs out there that take what you train to heart. This is more of a training problem, ie going tooooooooo slooooooooowwww, than a dog problem. He never quit. That is more important than whether he got esquived.
i dont think the dog should let the decoy get that close on th object guard. i would prefer to teach the dog to bite when the decoy is that close. wich i think the rules state that at 1 meter he can bite.