Yeowch! I'm not a fan of other folks getting hurt. Makes me light-headed. Funny thing is, when I do something stupid to myself (which has happened a goodly number of times), it's no big deal. Anyway, I hope you're on the mend soon and that they let you keep the chunk of steel. Might be cool to fashion it into a firesteel striker or a tiny blade to fit into an altoids tin. If it could work its way that deep into your flesh, it must be worth using again.