Its so sad.
I only met Peter once, he was accidentally taken out from behind by another rider on the first lap of MDH250 race in Buttonwillow earlier this year. They were both down in the apex of my turn, turn 2, with a second wave of 30 ...bikes coming a few seconds behind them. The other rider got his bike up, and I told him to get off the track, and I got Peter and his bike off the track, but we were still in an impact area when the other bikes were coming into our turn. Race control red flagged the race, because they didn't know I was able to clear both bikes. I told Peter and the other rider to get back into the pits, and have their bikes re-teched and get back into the race for the restart, which they both did. On the restart, Peter was out in front again, and led the whole race for the win. He was ecstatic, and really gave me big props when he went by me. This is a picture of him on the cool down lap of that race, in my turn.
I wish all the best to Peter's family and friends.