Escape from Aushwitz

http://www.haaretz.com/jewish-world/former-inmate-recalls-daring-romantic-escape-from-auschwitz-1.303055?localLinksEnabled=false

This is an extraordinary story, if true. I don't mean to disparage, but I am curious as to how it's possible for an inmate to get a hold of a full ss uniform and ID papers...