I haven't studied all the released evidence, so someone correct me if I'm wrong, but it appears that:
1. Level at FL 350, the PF got in an unusual attitude as a result of pitot failures,
2. He climbed to FL 375 - 380 before stabilizing,
3. Once at FL 375, he was flying but above service ceiling,
4. The aircraft therefore slowed to a stall even with TOGA power,
5. A stall was entered,
6. The PF held nose-up controls for quite some time,
7. At some point, the Captain took the left seat and took the controls, at which point the PF relinquished control to him.
Is that the consensus?