re: Hell of a ride, while it lasted
The whole video is on the SpaceX website to download and it'sfairly good quality as well.
The 'ring' that came off the Kestrel engine was a normal thing - it's there to keep the nozzle in shape during accent and once the second stage ignites it will come off because the adhesive melts.
I'm still suprised Elon's happy to sign off on seperation when the Kestrel engine whacked the side of the interstage during seperation, but the way the second stage regained control after that knock was superb - fantastic to watch.
Doug
