Oblivion game disc is cracked!

My Oblivion disc is cracked. Not the hacking pirated type. I played it last night without and problem. Ejected it and put it in it's case. Just 2 minutes ago I removed it from my case and inserted it in the tray and tried to load it. The disc drive made a sound like a skipping record but softly. I shut down the 360, restarted and ejected the disc after the same noise came up. Thinking someone I got a stray dog hair or something on the bottom of the cd I turn it over and see a straight crack about 1.5" from the center ring. :cry: I work with software, I have over 50 titles and I NEVER had a problem with a cracked game or DVD. I taught my son how to handle Cd/DVDs (he never touched this one) by NEVER touching the bottom of the disc. WTF?!?!