contact the Aussie Rescue group in your uncle's area. They can evaluate the dog, possibly help with it's training, and find a new home if that is the best solution.
Working dogs thrive when having work to do.
Herding dogs NEED to have an outlet for their instincts: if not, they can become destructive and neurotic.
All dogs do best with structure, physical excercise, knowing who's the boss, and what they can do that is right ('Sit') when they get corrected for doing something wrong ('No Bite').
OK, Last time.....................herding/working dogs do not need any "working" for the most part if you know how to raise a dog and show it/them that you are the alpha male/female. I have 2 and I have several friends that have them as well. This s*** is not rocket science. Show your mongrel dominance and you will always prevail. Haazooos!