"This snotty punk was interfering with this procedure by refusing to talk with the cop"
See I think you are wrong there, he WAS talking to the cop:
Brett: I don't wish to discuss my personal life with you officer.
Looks like a conversation to me. If he just sat there, kept his mouth shut and stared straight ahead I'd agree. But that isn't what he did. There was more than enough back and forth conversation to determine his sobriety. He was lucid and obviously not slurring his speech or they'd have gone to the DWI shuffle right there.
At this point the cops know he isn't drunk but he has pissed off the police with his snotty remarks.
If he was your son would you approve of his rude behavior and taping of the police who are merely operating a drunk driving roadblock?
BTW is against regulations for a cop to ask someone where he is going? Of course not
Please note this punk is thinking of suing and says he doesn't like these police roadblocks. A budding young libertarian