Newer 6950's were locked for a reason, infact amd destroyed the extra cores with LASERS.
If you fail at flashing, you can brick your card making it useless.
IMO not worth the risk!
this is 95% true. there are still some dual bios cards floating around on newegg. im not sure what one they are but they are still there i believe. other then dual bios cards i think he is out of luck like you stated.