I had a similar thought, if you try warranty (2 years on compacts IIRC?) with a kind note explaining what happened they may just ship you a new battery. Admittedly, it seems like a ****-shoot & probably at the discretion of the tech or MOD that day.
Beyond that , I'm sorry I don't have any actual tech for your original question & if you do find a solution please post up. I've often looked at those tabs & thought they look like a weak point, but I've not had one break - yet.