Again, why avoid the ring, John? No clue into Oswald's state of mind... good, bad or ugly?
I didn't "avoid" anything. Steve mentioned the money as "evidence", and didn't mention the ring. So why would I bring it up in my reply?
But since you asked, at least Michael's supposition is actually based on the knowledge that Lee and Marina were quarreling the night before and that she refused to move back in with him. Your supposition is based on FA.