I, too, did this Pink banding fix on my pn63c8000. Trying to get samsung to even acknowledge the problem was a no go, so if anyone from Samsung is listening, I am not planning on buying another Samsung in the future because of my terrible interaction with your support. This is clearly a recall worthy problem, and the fact that I couldnt' get my panel swapped out is completely unfair.
Now, you guys who made this tutorial/discovered this fix... thanks! It seemed to work! Be very careful when matching the screws back up when you put the TV back together. I am pretty sure you could "screw" it into the actual display if you don't pair up the screws correctly. Still, its been about a month at this point since I had the courage to do it, and I haven't noticed anymore banding at all. The only thing is that the image seems to have a bit extra softness to it, but I'll make that trade any day.