You can "seriously doubt" it all you want. I posted the video showing the escalation, and screen capped it to that exact moment where he did just that.
And if he did, so what. The bodies of police officers are not sacred objects. UNLESS he did so with obvious hostile intent, the officers (and you) are still wrong. As they were wrong from the very start. Unless and until something other than words took place, the cops should have stood off and watched. Period.