If anything he looked like he was waving towards the camera but it looked brightly colored so maybe it was a bit of gear like a torch which somebody dropped while they were taking a close look at their screw-up. Then when he runs back towards his car he raises it above his head to say he’s got it, lets GTFO.
If anything this highlights how poor a tactic ram raiding is. You have to make the loudest noise right at the start of your crime, not at the end. An alert resident could call the police as soon as they hear the crash, and the police could turn out to be a few blocks away.
