Re: Double ejection
No, due to a fault, the pilot wasn't ejected as well. The system should eject the pilot when the P2 leaves. That failed. The canopy was detonated.
Apparently before the flight the passengers heart rate hit 135. It's not known what it hit when he banged out.
The reaction to grab the release is interesting. When people get negative G, its very common for them to raise their hands. I've seen it regularly. He did the opposite.
What's also clear is people sense through their backsides. Loose straps matter. Lap strap first and tight. That keeps your bum on the seat, even in negative G.