I would like to add something. We have the report from the Canadian Police Research Centre. When you have to deal with someone who is in a state of agitated delirium, you know that you're dealing with a medical emergency. You also know that if you can minimize the time it takes to control the individual, you are increasing that individual's chances of survival. So an officer would ask himself how he could control the person as quickly as possible in order to give this person the greatest chance of survival. If the officer tries to restrain the individual with his bare hands, the situation might be brought under control in three, five or seven minutes, but there is also a risk that the situation might escalate. Don't forget that the officer carries a gun, and it's impossible to say what will happen.
Further, some people just don't react when sprayed with pepper spray and they might put up even more of a fight. This approach does not minimize the length of the intervention. The same thing holds true with regard to the baton. When you are dealing with someone who is in a state of agitated delirium, this person often does not feel or perceive pain. So the baton is not the way to go. Don't forget that the objective of the officer is always to control...