PJ2:
That would say, to me anyway, that the PF had no idea he was in a stall, correct?
Additionally, is it conceivable that the climb from FL350 to FL375 was caused by an updraft. (Yes, I know this is all conjecture.)
As per this:
Figure 10. Cross-section of Air France 447 flight track through thunderstorm cluster, based on satellite imagery analysis and conceptual MCS models (created June 2009, not updated since then but still considered valid). Light shading is precipitation near the surface; medium shading is cloud material, and dark shading is suspected updraft areas. The flight may have deviated several miles west to avoid the SALPO storm; whether they did or not is unknown; but they almost certainly went through the bulk of the MCS as shown here.