Dude, hands on the car is not "under control". His back would be to them with the car obstructing the view of any officer facing him from the other side. Think how easy it would be for him to pull a gun from his waistband and turn it into a bad situation for the police.

The second time, while bs, is also understandable, since they were still looking for the guy. The 2nd stop might have been to double-check, or to be sure it wasn't a different guy the 2nd time. This kind of policing for the most part isn't what we're used to in the U.S., so it's shocking when we hear about it. But imagine if you were in Mexico or some other country with real corrupt police. Some locals would have found your body in a ditch.