Re: Why are these guys even in charge?
Erm, sorry, what point are you trying to make? I can't make head-nor-tail of your post.
The safety board have come out and said that they've found the engine and fuel tanks roughly intact. So an engine explosion is unlikely. But that the first look at the telemetry suggests the tail moved into its re-entry configuration while the rocket was still firing. The cockpit video shows the co-pilot unlocked the tail controls, but didn't command it's deployment.
So the initial guess might be that the craft broke up due to aerodynamic forces it wasn't designed to cope with. But there's still loads to look at. Is the telemetry correct, did the tail deploy? Was there a problem with controls, software or maintenance? Does design need to be changed, so the tail can't be deployed by mistake? Or is this just a co-incidence, and something else happened?
So they'll try to correlate the telemetry with the configuration of the pieces they pick up from the ground. Then try and work out what was going on from that. They'll have tons of information to go through. Telemetry, physical examination of the wreck, manufacturing logs, maintenance logs (I guess roughly the same as this is the only prototype), whatever recorders the craft carried itself, and tons of other stuff.
It is rocket science.