POTUS is definitely making multiple attempts at pulling down macrons hand from the devil horn thing. I think much of it has to do with the fact that its a weakness from a body language standpoint to be manhandled like macron did and Trump wants to appear strong.
You can tell he's irk midway through the jerkings when POTUS opens the corner of his mouth signaling "This guy is a fuckin dumbass." It did not sit well with him.