He's probably screwed. It's one thing to be arrested by local authorities and prosecuted by a district attorney, It's another thing to get arrested by the FBI and get indicted by a federal prosecutor. Not that they are totally incapable of getting it wrong, but they have massive resources and they usually take the time to build a monster case before bringing charges.
Carton allegedly makes 2M a year to act like a knucklehead and talk about sports. Basically, he hit the lottery and still blew it. I guess the knucklehead shtick wasn't an act.