Eh, Vince will pay that fan a ton of money to drop the charges, he'll give Punk a tongue-lashing of epic proportions, and everything will be fine. Vince has too much time and money invested in Punk to let it all go to shit over this one little thing.
As for the incident itself, while it is hard to condone a wrestler hitting a fan, fans shouldn't be putting their hands on the wrestlers either. I mean, if someone is hitting you from behind, how long do you just stand there and take it, especially since you don't know far the person hitting you will take it? Honestly, given how often the wrestlers go into the crowd like that, I am shocked it took this long for something like that to happen.