If you write the exact name in google and find the URL of the blizzard topic you were looking for just put mouse over it and this sign shoud appear >> so move mose on it and prewiev of older "stored" site should appear now click on archive button and you will get into the stored older prewiev from google and this can contain the non edited version of the post thus allowing you to read the exploit/bug.
EDIT: well thanks to some posts its easier to just write in google cache: and URL of site you are looking for.
For example:
cache:http://www.ownedcore.com/forums/diab...inite-loh.html (Furious Charge - Dreadnought Infinite LoH)