Beg to differ on the engine failure/tail theory. When the AA DC10 that lost an engine at Chicago in 1979, the engine flew over the wing and just missed the DC10's tail. In this case the blade failure may have been so severe that it caused the engine to separate and at that angle of attack after take-off the engine would have likely ripped off and over the wing. It may have then struck the tail a glancing blow, with various results.