Joe told Scott to expect a letter from him, and it wasn't an easy one to write. Joe's also sure that it won't be a simple letter to receive either. He'll be asking a lot from Scott.
Will Scott be able to follow the orders this time? Will he be able to accept the challenge? Joe doesn't know. It could go either way. All he can do now is hope like hell that their chance of a happily-ever-after hasn't been lost forever...