Burks was training for a triathlon to be held the same day as the shoot. He skipped the race.
Says Burks, "I spent five hours eating on camera."
And, that is pretty much all he's saying. The show's producers put restrictions on how much he's allowed to reveal, including his role on the show and details about the challenges.
As this is a horribly kept secret, I'll just go ahead and say that Burks is a judge and that at least one of the challenges revolved around vegetarian food.
Burks promises to tell all after the airing of the episode, so check back.