Hyperveloce: I agree with your interpretetion of the message about IR2. A number of people (including me) suspect other problems, beyond the Pitot probes, interfered.
And I disagree about your statement that only the AoA probe was spiky in the QF072 accident. The FDR and The QAR reported spikes from many parameters, mostly air data but also pitch and roll.
The upset only occured because the master PRIM failed to correctly filter the AoA spikes. ATSB found that IR1 was flaged inop first by FMGEC1.