As someone who also fell victim to the PS3 bug before I could get 100% in Brutal Legend, I think that your cause is worthy but your method ineffectual. I would take Double Fine's suggestion
and email EA Customer Support and encourage others to do the same. If they decide to put the patch out, it would be because a sufficiency of requests was sent that way rather than because of anything at Petition Spot. Seriously, you're wasting your time.