"They" may settle the civil charges, but he was arrested and charged with assault. I don't think that just goes away.
Ask Michael Jackson.
Wow. Hey, I love this guy's acting and his movies. But, you can't even make an excuse for this.
Is the guy so egotistical, naive, or whatever that he thinks he can do something criminal, and then it all goes away with an apology? He threatened the guy, and then hurled what amounts to weapons at him, hitting him with one of them, and injuring him.
IMO, the DA ought to prosecute.