Please look the at the entire quote again:
“My marriage is not perfect because I am in it … I am a sinner and I married a sinner, knowing he was a sinner … I am living in a fallen world, governed by a fallen angel, and I myself have a fallen nature.”
Ok - I did not take it out of context.
The assertion is that the world is governed by a fallen angel. Is that thought in accord with the official teaching of the Church?