Isn't everyone on this thread dancing around the very frightening notion that the VS separated in flight due to unexpected aerodynamic loads or pilot-induced loads?
Not at all
There are a whole bunch of that don't dance but stand square shoulder against drawing conclusions prematurely without data.
Lot's of folks try "what'ifs" but lacking the ability to convince the majority these also fade into the darkness as we all await another tidbit of real data rather than hypothesis alone.
If you understand investigative techniques please feel free to contribute. If you don't then don't be swayed by someone elses arguments on the internet.