We do not know for sure whether a g/a was in progress, and SURELY the focus needs to be on why were they anywhere near the cumulo-granitus?
As I read through the discussion, the GA software linkage discussion is linked to the TAWS/GWPS, and the idea that GA power would be what you select (or what George gives you when responding to the GWPS?) in the estimation of whether or not terrain avoidance features were activated, or not, as cumulo-granitus approached. By the way, you got a chuckle out of me with cumulo-granitus.