Jem Aswad Senior Music EditorThe Weeknd already said that he doesn’t plan to have any special guests for his Super Bowl halftime performance later today — but that didn’t stop James Corden from popping by rehearsals for some unexpected assistance with the show.In this comic skit, Corden turns up at rehearsals not only in the same red-jacketed outfit that the Weeknd has worn through the entire storyline around his “After Hours” album — but wearing the same full head of bandages that have