Good story. It emphasizes a couple things I said early on. First, in those days it was risky mostly because we thought no one had done it before. I don't doubt that he thought he was only the second man to have done a marathon after AVR, but that's only because he didn't know enough of them. I corresponded with a woman in the mid 90s who had done the Pikes Peak Marathon after valve replacement. Then again it wasn't a man. And a cyclist friend of mine in Schenectady, NY was able to do a century ride within a year of AVR in 91 or 92. And then there was me returning to running in 91 after AVR, but then I never went after marathons. I was way to scared to try that much.
All of which underscores my other point. We didn't know there were other post-op athletes back then. We were all experiments of one. There wasn't a forum such as this where we could exchange experiences. That makes all the difference.