If one adjusted EPR's to Turbulence Penetration settings and maintained attitude manually using the standby ADI....how many reasons why that would not have worked. Can these things not be hand flown.....to that extent?
Not related to your question but, just for clarification:
EPR must be disregarded when flying unreliable speed indication procedures. One has to use N1, (and ATT) because EPR may well be also "influenced" by the severe weather conditions (if and when that is the case).
V.