When the TARDIS is destroyed in the crack in space-time, the crack itself is satisfied. But something else starts to happen. The universe is unmade. Stars vanish. History is undone. Young Amelia Pond ceases existing.
But, as with the crucifixion, this is not where the story ends. The Doctor understands that the Pandorica has healing powers. Indeed, it perfectly preserved Amy for 2,000 years, and completely restored her life when Amelia gave it a living example of her DNA. The Pandorica opens. Amy emerges. It’s light falls upon a destroyed Dalek, bringing new life to it as well.
So the Doctor realizes if the Pandorica could shed it’s light on every moment of the whole universe, the entire universe would be regenerated. And so he takes it into the heart of the exploding TARDIS, which is exploding in precisely every time and location.
God on the cross did not require an outside element in order to restore the universe. Rather his death on the cross is not only what satisfies the crack in the universe, it is his ultimate creative power as God that likewise regenerates the universe at the same time.
And so the world is remade, the crack of sin satisfied, and the universe exists unbroken. Christ is not only the hope that sin is being vanquished at every moment, but that life and light is being poured into the world across every moment. It is the promise of the New Heaven and the New Earth that will be completely realized when the moment of the crucifixion ends.
The resurrection of Christ is the first act of the New Creation.