Your product doesn't work and the company refuses to support it or fix the issue. What are you supposed to do, suck it up and be happy with your $500 paperweight?
The known fix for the early 2011 MBP's with the discrete GPU glitch is to stick in a fresh version of the same motherboard with the same glitch.
I replaced my board under Applecare for free a few months ago, so I'm a lot less pissed that the issue came back than I would had I paid the non-Applecare repair price of $500. Now I'm debating whether I want to replace my logic board yet again only to have the issue come back a few months later.