I don't remember the second accident, but I still recall the first one. A small car (VW Bug) pulled out in front of him and he t-boned it. He jumped. It was in an otherwise open area, so he rolled. Banged up a bit, but he figured he ended up better than if he had stayed with the bike, which ended up embedded in the car (something about VW Bugs having not much in the front wheel area that was strong, and that's where the bike hit).

As I said, it could entirely have been chance that this worked out for the best. I'm not a rider myself, and my brother is not an expert just a rando like me who has had a fair amount of interesting experiences in his life (how he is still alive today, I'm not quite sure, but luck has to be the biggest factor).