According to the EXIF it was matrix metering at -1/3. Aperture priority.John
Thank you for posting this here. I've seen the photo before and it's just and dramatic and invokes so much emotion even on the second go around. This shot probably makes you feel like you are reliving the event over and over. What a great feeling. There is no way you can recreate this at all.
I also wanted to ask you what metering did you use for this (or what you can remember)?
It never occurred to me I should have had active D-lighting to reduce the white out!