Funnily enough, I literally just came back from the shops with a heat gun from Bunnings (for that very purpose).
EDIT: For those whose PS3's actually work, if you REALLY want to play the demo now I suggest creating a US account and downloading it off the US PSN Store. Don't bother on 360 as you need a Gold account (and would therefor need to provide bank details that match up to the "totally legit" US address you provided.