Except, Sanders has expressed no interest in running as independent, he even said he wants to help direct the conversation for the Democrats at this point. He's always said whoever wins everyone should unite behind that candidate. Staying in now he can make Hillary provide some campaign promises she might not have otherwise, and if she is indicted he'll still be there.
Sure Trump says Bernie should run independent.... I wonder why? He thinks he's already been appointed King and this would be a free win for him. Trump of course will even screw over the party he's supposed to be running for if he doesn't get it. Man never has and never will have any loyalty to anyone, except himself. Once a con-artist, always a con-artist.