Where can I find a published copy of this poem for forensics?

The slam poets Rachel McKibbens and Marty McConnell perform together as "The Piper Jane Project". They wrote a poem called "Spine" that was on the IndieFeed podcast a while back. I would really love to use this as a forensics piece, but I need a published source. Is there a book or anthology with an ISBN number where I can get the exact transcript to use for competition?