Baking anything at that temperature would melt stuff, and seeing that the boards on that card are kinda plastic, would it not entirely destroy the card itself?
I think you need to bold your disclaimer a bit though
I can imagine many will try this.
Generally when one of my cards tank, I replace it, but then again I am not an overclocker, so mostly they die of age. I have seen a few really weird experiments over time as well. Even PC Format tried to run a PC board in oil, which worked for a few minutes before it died inevitably.
Cards are expensive, so I can understand trying to rescue them by any means necessary, but that's a bit of a