We can't know for sure until the third instalment, but I would tend to agree with you. This is a *special* so they are allowed to get away with a bit more. Still, even if it was part of a proper series, I wouldn't frown on it. It's very clever, and I don't think they've sold out or been overly "self-referential". It's complete and utter nonsense, and that is well within the domain of Red Dwarf, with it's made up vulgarities, fictional units of measurement, impossible technology and severely skewed concept of physics.