I still have the video of him that I took at Oshkosh some years back. Very clever flying. I saw him sheltering from the heat at Oshkosh a couple of years ago. Like all people of his age, he looks quite elderly now, and I'm pretty sure he doesn't fly anymore. Still a revered personality.
I don't really think that rolls are particularly dangerous, given height etc., as long as positive 'G' is maintained. A Lancaster was rolled, as was Concorde, by two [test] pilots on one flight!". Apparently one rolled it one way and the other 'unrolled' it so to speak!