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As all speed indications have the same error, none is rejected by the computers and the high speed protection will eventually engage, pitching significantly up to reduce speed (you cannot override this pitch up).

From another Flight International article:

"France's Bureau d'Enquetes et d'Analyses confirmed there was a sudden change in displayed speeds and that there was a discrepancy between that shown on the primary flight display and that on the standby instrument system."

Since the three different pitot systems were giving at least two different readings, there would be no high speed protection.

Roger that.

So, uncontrolled pitch up due to overspeed protection is not an issue and the graphic at my post #85 here becomes the salient issue.

They did not have dual-engine failure concurrant to unreliable airspeed indication. SO, pitch / thrust (per the graphic) would have been the immediate watchword of the day. Given the facts, the memory items do not apply to the situation at hand (no imminent immediate threat to flight safety).

The aircraft stalled after climbing to FL380. That could only occur to due improper procedure per the checklist shown. Perhaps the PM read the wrong pitch to the PF?

Whatever the case, it was at FL380 that stall onset predicated the specific fundamentally - putatively ingrained - procedure to addres the very real imminent danger presented at that time; the procedures are mutually exclusive. Given the stall, pitch / power was untenable in that stall requires drop nose to checklist determined level, and increase airspeed. What airspeed given that IAS was unreliavble? Well, gee, when the deterrent buffet goes away it must be sufficient, eh?

Then attempt to return to level flight using pitch / power procedure as mandated by unreliable airspeed checklist. IF the stall returns, increase the pitch down maneuver by an additional increment to increase airspeed sufficient to depart from stall condition (repeat as necessary).

In theory this will ultimately rip the wings off. The only way that's plausible if severe icing has destroyed aerodynamics of the airfoil.

There's no evidence that severe icing sufficient for loss of lift occured though. I believe a reasonable explanation for pilot reaction: panic.

Muadib in Dune: "Fear is the mindkiller."