DER SPIEGEL (a usually reliable German weekly) reports
here (sorry, only in German) that the CVR reveals that Captn. Marc Dubois rushed to the cockpit and shouted commands to the two pilots flying, moments before it all went horribly wrong.
According to the Spiegel report, the pilots successfully tried to avoid the convenctive wx in front of them, but the pitot tubes iced over. Shortly after the ASIs failed (I quote Der Spiegel here), the a/c was pulled up steeply. If this maneuver was commanded by the pilots or the systems is - according to Der Spiegel - unclear at this stage.