Not sure what you mean. His assertion is that conflict will lead to progress. But all we do is rehash. He recriminates things from the very beginning of the marriage. I sometimes just validate. Sometimes he pushes me so much (waking me up at various times in the night to hash things out) I do get bad or go backwards...
I guess my point is that him getting angry doesnt necessarily indicate that you are moving "backwards." I think whats important is you deciding what is important to you and not caving to him just to placate him.
If you dont want to talk about the same thing again, then say it, and excuse yourself. Eventually, he will get the hint, even if it makes him mad the first couple times.
I think that may be healthier than continually having the same fruitless discussion.