And just how many wrecks have you been a first responder at---Point being I've made a few of those in my career.
It appears the zipper push is a location thing; however, I feel BP summed it up well in post #21.
If you will READ the OP---- the lady got out of the zipper with the intent to force her way back in at the front of the line before LEO intervened! IMO that's just rude behavior.