You might want to listen to the End of Time Pt 1 commentary -- RTD talks at some length about how that scene was written to show the Doctor's... he hesitates to use the word arrogance, but possibly selfishness, in not wanting to face the summons and go to his death. And he points out that it's the fact that he delayed -- as underlined by the Ood saying he shouldn't have -- which means that he's therefore one step behind the Master's resurrection rather than ahead of it, and therefore brings about the whole mess.

In other words, it's a classic tragic-hero routine, where his character flaw brings about his own destruction.