Sounds very much like a high level excited delirium case. ExD can be caused by a number of things, or a combo of factors, including cocaine induced psychosis, meth, bath salts, smoking "wet", schizophrenia, PCP.
The only less than lethal force that works effectively on people in an ExD state are a good Taser shot or LVNR/rear naked choke. Team tactics can work as well if you have enough people and they work together. In this situation, with my training and experience, I would have used my snub to contact shoot the bad guy in the head, I have very little doubt of that.
My first serious encounter with a high level ExD cases was a very, very straight laced college kid who had never done anything, not even drink, but didn't want to be uncool and took some hits off of the joint he was passed. That joint was dipped in "wet". Not that many minutes later he was buck nekid, tearing up the apartment, later attacked a campus security officer, destroyed his car, and was trying to jump into the air to grab out police helicopter (orbiting at about 500 feet...) when I rolled up.