The cop said in court that it was a consensual encounter in court, before then it was because they got a call, but public info proved that to be a lie.
The time to argue “rights” is
not when you are sitting in your locked car in a dark private parking lot being instructed by the police to hand over a driver’s license and identification. You do what is requested and argue about rights later.
If you look at the incident from the police officer’s perspective, you can better understand how your friends‘ actions led to his arrest. The arrest was not inevitable at the start.
The officer had the right to approach the car and ask both occupants of the car for the reason they were there. The officer had the right to ask the wife for her identification. If the wife and husband had complied with this
very simple request, an arrest would have been unlikely. The wife’s reactions were unreasonable and extreme.
What happened after the arrest, in the jail, was apparently deemed necessary by the police because of your friend’s actions, reactions.
All I can suggest for your friends is that the husband contact an attorney (the same one he had in court or another one) and have all facts reviewed. I don’t think your friends have any argument with merit to make, based on what I saw on the video.
It is too bad that an evening out playing a game had to lead to the police encounter and arrest and conviction.