Curious and curiouser. Maybe they thought they were fighting a downdraft - engines roaring and stick full back? - not noticing stall because they were below 60kts?
On the other hand if the fuselage really is intact and upside down as some reports have said, then vertical speed can't have been that high? If they were gliding then it was more likely to have been a double flame out, but then why no comms? Maybe the RAT didn't supply enough power for transmission?