You can drill through the lock. Its easy because it is only pot metal and the only thing you are hurting is the lock. If the "tailpiece" is already pulled out once you have the hole drilled its as simple as turning a flatblade screwdriver in the slot the tailpiece was in. Purchase a new lock from the auto parts store and if you are picky you can take it to a locksmith and have it keyed to your door key once again.