C-SAR;
With the help of the others who you have mentioned, your field work stands among others who have made contributions of exceptional quality and dedication to the art and science of flight safety work; I add my sincere thanks for your efforts and risking the "questions..."; it really helps to get a sense of the accident scene when discussing various notions of how this happened. Hopefully it will be determined from the recorders a bit more about why it occurred. PJ2