Try to use a pair of tweezers or needle nose pliers to get the piece out. If that does not work and your bike is locked up, your only option is to contact a locksmith and have them remove the lock. Take a picture of the lock, keys, key # and the locksmith bill and submit this info online.
We will send you a new lock and refund the locksmith bill for you. The lock will come first then approximately 10-14 business days later, if needed, you will receive a prepaid debit card, or a check in US Dollars for Canadian customers, for the removal cost. It will be a plain white envelope coming from Indiana.