I am always in support of writing out tickets to lousy parkers, no matter the circumstances.
As for the arrest that started it... yeah, I might get pissed too if someone purposefully started videotaping me while I´m on public duty. That might be a sign s/he doesn't trust me or is preparing to frame me. However, letting myself actually be distracted by that or, moreover, attempting something completely illegal - like arresting him/her, is just about the stupidest thing to do. Plus, it proves s/he was actually very much right to distrust my competency and judgement.