It's shaped kinda like a four leaf clover. One lug was very tight, so I was leaning on it. That's when it popped off and bent the clover shape and split the side. Now it's stripped. The clover shape just won't grab the lock lugs.How complex is the lock mechanism? If it's just a tab, you might be able to use a screwdriver to jam it while turning the lug with a wrench or vice grip.