Complex sentence: Papen himself was placed under house arrest at his villa with his telephone line cut, although some accounts indicate that this "protective custody" was ordered by Göring, who felt the ex-diplomat could be useful in the future.
Split into simpler sentences: Papen himself was placed under house arrest at his villa with his telephone line cut. Some accounts indicate that this "protective custody" was ordered by Göring, who felt the ex-diplomat could be useful in the future.