I think some on this thread may be over analizing with their speculation and of the technical chatter. IMHO this accident appears to be nothing more than a series of events that led to the structural break up of the A/C due to weather....."exceeded the structural limitations of the airplane" as they say, by possibly flying blind into a very hairy area of that storm system. I have visually put myself in their predicament many times since this happened (although I'm not familiar with the Bus) and each time I've had a serious case of goosebumps. Everything went to hell very, very fast it appears. This flight will def be in future sim rides for many of you I'm sure.
Methinks we'll never know exactly what happened without the FDR and the crew will be blamed, of course. Wrong place at the wrong time.