hm... from the last words "but whats happening?" you can imagine they did not knew until impact they are stalled. when you have a high pitch up and simultany a massive descend rate ( more than 10000 fpm!) - what other than a stall should it be ?
i am wondering if its truly so simple, that three pilots until impact believed you cannot stall an airbus and even realizing for minutes that pulling gives no result tried it until the end.
i think they were pretty aware they go down like a rock - one pilot says " but why we are going down like this?"
maybe... but thats only a quess - an old school solid stick shaker and pusher in this particular situation would have saved more than 200 lives.
@ dani : thanks for the information, i have never flown an airbus, so did not knew exactly !