I have locked myself out, but never had a defective lock. I saw one of the vendors at the bhii rally in 08 in an american eagle who had the problem you are describing. He crawled thru an open window and unlocked from inside. Yours sounds more serious.
2005 Sun Voyager, Safe-T-Steer
2009 Chevrolet Malibu, Blue Ox, SMI Duo,
Ohio Cardinal Gulfstreamers
FMCA Gulfstreamers International