I'm going to chime in here. I'm a law enforcement officer, as some of you know, and also an instructor for my department. One thing I hammer into my students is that they should always act as if they're on camera, because they probably are. As long as you're following policy, you have nothing to fear. If you don't like being filmed, you better get over it, because it's only getting easier and easier to record everything you do. If they physically get in your way, that's another issue, but if they're on the sidelines taping the show, all you can do is smile and try to show your good side.
As far as the offenders being jerks, that's another thing that you better get used to. I've told every officer that brought someone in "because he had a bad attitude" that he's risking his job, and more. They MUST learn to deal with people professionally and with a calm demeanor. Lots of those people "with a bad attitude" are just trying to set you up so they can sue you and the department. Don't get baited into doing something stupid.
One more thing. Yes, cell phones can be converted to weapons. If that were the case here, do you think the guy would flaunt the phone in front of the officer by recording him? No. He'd pretend to be on a call, or hide it completely. Common sense goes a long way.
The cop in the story is out of line, and he'll probably get a nice smack on the wrist for it. You won't hear about that, but it'll most definitely happen. Hopefully that will be enough to send the lesson home.