OK, here are my results:
1) Tried both Gigabyte bios update programs. Easy Boost doesn't run on 64-bit systems. VGA@BIOS backed up my bios. Then I patched it with ATOM-15 successfully. Tried to reflash and VGA@BIOS told me that it couldn't flash the mod because it was the same bios. So that didn't work.
2) Ran ATIWinflash and backed up my bios. Ran ATOM-15 and successfully patched it. Reflashed with ATIWinflash. Card bricked
3) Mounted card in a 2nd pc with 2 slots and reflashed original bios with ATIWinflash. Card fixed.
It looks like I can't flash this card.
The bios does have an option to disable the full screen logo, so I did this and I see the attached 2 screens during boot.
Are these modes above the 31KHz range? In other words, is ATOM-15 even needed in this situation? Yes, if I want to get into the bios, I need hook up my LCD and disconnect the CRT. Then the bios will display normally so I can make any adjustments.