Lonewolf - we are I believe, in danger of going off on another wild goose chase here.
1) There is no such thing as 'partial panel' in modern aircraft. There are standby attitude indicators, but 'p p' refers to the old 'turn and slip' which can be used to fly in IMC, but is not fitted on modern a/c
2) I thought we had eliminated attitude indication problems way back?
a) I don't think a laser-ring gyro can 'exceed' any limits and 'tumble'
b) I don't believe there is ANY indication of IRS problems in the ACARS, nor would the pitot problem cause such
c) There would be a separate IRS based standby attitude indicator.
Now, back to conspiracy theories and paper poo-pots
It certainly is an advantage to be mad here.