This episode was brilliant as far as 'bait and switch' with the seeming pedophilia jokes. In reality Captain Sunshine had just become extremely deranged and overprotective because he had lost so many young sidekicks over the years. But the way it's presented up until the end of the episode makes it appear that he's a pedophile.
Supposedly Brock is not going to appear that much this season due to some other work that Patrick Warburton has to do in addition to this role.