Dog Attacks Jogger when Owner Loses Control (ORIGINAL VIDEO)(Pit Bull)

This runner was just running along and got attacked and bit by a large dog, this is the entire video of that encounter.
I don't know if this dog was in full on attack mode or just wanted to bite him a few times, the runner did in fact get bit by the dog but the dog didn't seem super aggressive or in serious attack mode, but look at the body language and the tail and tell me what yo