My wife and I have been married for 15 years and after the first year, the sex started becoming less and less frequent.
This is a lot of very personal information for anyone to give or ask for.
You may want to discuss the process of filing a report and pressing charges.
Likewise, a guy is not a big-shot for doing the same thing.
Now, the issue was not that this man was incapable of turning his wife on sexually.
So, unless a person feels the need to have a bowel movement, there should not be significant poop during anal sex.