You did nothing of the sort and the OP asked nothing of the sort. The OP asked for the:
CASR reference regarding the PIC being allowed to vary regs/procedures/limitations if they deem it necessary in an emergency.
The very simple answer to that question would be the CASR that has that effect.
You 'kicked them off' by pointing to a haystack of material of which the OP and everyone else is already aware. That, presumably, is why the OP asked the question: To avoid having to spend time trying to find a needle in that haystack.
What is the CASR has the effect of allowing a PIC to vary regs/procedures/limitations if they deem it necessary in an emergency? Quote its text here. If you can't find it, despite apparently having the tools and method and materials at your fingertips, how will the OP?