Theory:Doctor Who television discontinuity and plot holes/The Caretaker

So how does tossing the Skovox Blitzer out of the TARDIS to float in the depths of space and slowly die fit into the Doctor's "I know that you shouldn't be on this planet but I can help you with that" earlier statement, and, in fact, his general ethos? Shouldn't he at least have tried to return it home? Or give it new Orders to be a good flower pot or ATM, at least?