Complex sentence: According to Card, while he was writing this story, he started to think about how Ender got to the colony and as a result, came up with a story involving a power struggle between Ender and the ship's captain.
Split into simpler sentences: According to Card, while he was writing this story he started to think about how Ender got to the colony. As a result he came up with a story idea which involved a power struggle between Ender and the ship's captain.