Dogs are bad little beasties. I would avoid HTH with any P.O.'d dog before just about any human. I seen what trained and wild dogs can do to humans when they decide they want to.
Azone gave good advice, if you have to mess with a dog... tie it up and pin it down. Use your advantage in wieght to pin it to the ground and stay away from the chompers.
btw- I have a Shepard that has had some Shutzhund training, she is my burglar alarm and home defense weapon all at once.