@lunux, there are no patch pattern in this BIOS, but nest PowerManagement2.efi module is present. I will look at it's disassembly and try to find a way to remove 0xE2 lock.
@The Real Deal, I don't have X58 board to test, so I don't know how can I patch this. If anyone can find a way to correct this behavior - I can write an utility to automate this correction. I can't develop a way to patch without actual board and much time for testing. Sorry.
More to say, AFAIK, power management on X79 boards is not supported by OS X itself, so any PM patches we can make are useless for now on. Let's wait for Apple or independent coders to develop this support.
@mrengels, try using AMIBCP utility and look for hidden modules and strings. It's possible that they can be revealed and used, like ME menu in older 0xxx BIOS versions on ASUS Z68 boards. Another option is Option ROMs and VideoBIOS update, which can bring some minor speed-up. There are no ultimate hidden option in any modern AMI BIOS, that makes your PC ten times faster and unlocks HT on 2500K. What a shame.