Fear, adrenaline, absolute terror for his life. I don’t see any reason to conclude he was on anything. He acted like a man who was afraid the was about to be killed.
The police were acting more than a bit erratically. But I don’t think they were on drugs either. Just being in these kind of situations is enough to bring about an altered state. The mob mentality and thuggery is unfortunately common.
If you watch the videos where you can hear the cops talking with each other it appears that he was both speeding and driving on the wrong side of the road. That was why the original charge against Nichols was reckless endangerment. Before the beating began you could see that he was in a very agitated state and was not being rational. But, and this is why the cops are being charged with murder, that does not excuse the cops for their actions after they had him under control, or some of their actions in trying to get him under control. There is a chance that the use of pepper spray aggravated the officers. But that was just incompetence on their part. This was not a pepper spray type incident.
But if you watch the video his "altered state" is rather clearly drug induced. But that cannot be an excuse. for the action of the police. There were illegal blows to the head before they had him cuffed. There were multiple kicks to the head
after he was in cuffs and under complete control. I do not recommend watching even an edited version of that video. If this goes to trial, and if the cops were smart it probably will not go there, I feel sorry for the jury that will have to see an unedited version of this. There are often circumstances that can make the actions of the police look reasonable when broken down. In this case that possibility does not seem to exist.
There is no excuse for multiple kicks to the head of a person that is barely conscious, handcuffed, and non responsive. The best that the police involved can do for themselves is to plead guilty and throw themselves on the mercy of the court.