What to do when 360 scratches disc?

[Euphoria14]

Hey, I just grabbed a copy of Gears 2 from my local Blockbuster for a 5-day rental and just got home and booted it up. I want to download the gold lancer

Anyways I then decided I would install the game, no idea why, but I just did. While updating I walked away from the room and when I came back the screen said it could not continue the installation because disc was dirty, scratched, etc...

I checked the disc and there is now an obvious ring around the disc, it is closer to the outside edge than the inside. I have never seen a 360 disc scratch this way before so I do not know where the scratch should be located.

Is there anything I can do temporarily to make this thing work now? I do not want a rental to turn into a purchase...

 

Thanks in advance.