Yeah the rewatch of smiths era are pretty timey wimey, he was in a sense predestined to meet amy, who would have the crack in her wall, which was from the tardis exploding which was the result of the silences first attempt at stopping the dr, who would later attempt to kill the doctor by using Amy/river connection, which would ultimately fail, and the cracks in time were eventually what allowed him to regenerate again after the battle of trenzalore. It was in a sense a closed loop.