The man was walking away and the bride was under no obligation to stick around and there was no basis for arresting her, nor anybody else in that party.
The net effect, if the officer had followed your advice, was to allow a perp to walk away from his crime. This is what you would be suggesting.
If the cop had done this, isn’t that being a bad cop?
CONFRONTATION! CONFRONTATION!! CONFRONTATION UBER ALLES!!!
He was a rent-a-cop - a Mary Mallninja. Just because he was dressed in his Official Overlord Enforcer Costume doesn't change the fact.
Is every unruly "civilian" a "perp" in your Perpetual-War-With-The-Peasants world?
Man, you pretend soldiers are really weird.
If the cop had done this, isn’t that being a bad cop?
He wasn't a cop at the time. He was being a Farce Enlawment Orifice coon-dog.