Having the photos, I spent a lot of time looking at them over the past couple of days. A lot of time looking in sadness, other times wondering what happened. There are a few things I was able to discern (I'm a mechanical engineer by trade, so I tend to look at things in a certain way)...
The burst panel didn't blow out.
This photo shows that it's still fully intact while the rest of the body is buckling. I don't recall which team it was that is tying the burst panel to the chute lever. While that's a fantastic idea, I think they need to make sure the burst panel is designed such that it actually lets go in an explosion.
The pic of Scott with his hand in the air as he's reaching for the chute handle is just spooky.
I agree, but I'm not sure he's reaching. The camera I used shoots at 6.5 frames per second. That's 0.3 seconds between
running fine and
the photo to which you refer. Maybe you're right, but I think it's just as likely that the explosion caused him to let go of the steering wheel for a moment. It's also true that approaching the finish line, he would have had his hand off the wheel to reach for the chutes anyway.
As far as the chutes go, I've seen a lot of speculation here and elsewhere that maybe they tangled in the wheelie bar. That doesn't look to be the case. I'm not sure what the technical term for it is, but the "little chute" (the red one) seems to have deployed, but the main chutes didn't open.
I hope the investigators are able to learn why the car didn't stop, so if this happens again to someone, we'll be able to say "Wow, they were really lucky" instead of mourning them.
-Steve