Hmmm. I would think blacklisting the snd_hda_codec_nvhdmi module would work. But, according to that thread, it was only a partial solution. But, the thread ends on 11-03-2010, after a moderater posted "We do have a bug filed to attempt to solve this issue" on the previous day.
So, I would think that disabling EDID from xorg.org conf and providing a custom modeline that tells the TV how to display properly, as the original poster proposed in one solution, would be the way to go. But he doesn't give any details.
I don't have this video card. Good luck to you both.