Avoiding too fine a point on the topic, it is of note that at least three separately discovered control surfaces were discovered. I haven't followed the drift/current discussions; BEA would conclude that the a/c impacted as a complete airframe. The Vertical Stabilizer, Rudder (attached), a spoiler (left, inner) and a portion of the Elevator were of note prior to the conclusion by BEA that the a/c held together until the last. Since the discussion is drifting in a 'shedding parts' direction, I thought I'd remind us of the evidence, though I'm not implying that is what happened. Since Upset can occur in either of two seperate trends, it appears BEA have selected the Stall rather than the overspeed, shed metal format. BEA's statement is possible, but I question its status as a conclusion.