Late to this conversation.  Just to share, I had a similar incident a couple years back.   Some of the model's shots appeared on a softcore website and the model requested I remove the entire shoot from my agencies.  I explained that our contract prohibited the photographer (me) from using the photos in any disreputable fashion and that I had maintained that covenant by marketing only through reputable agencies who also prohibit such usage.  She needed to go to the end user and work her way back rather than start with me to move forward through the selling and reselling, posting and reposting of her (my) images. 

Fortunately it never went further.

Since then I always inform models who pose in provocative shoots that, despite my best efforts to protect their rights, in this age of infinite and immediate reproduction the only 100% effective way to protect your images is not to pose in the first place.  Just ask Jennifer Lawrence.

I wish this victimized photographer well but frankly I don't think the model has an ice-cube's chance in hell in a US court as far as getting a monetary judgment against the photog.

Support's been alerted @ SS and I posted on the forums.

Hey Scarlet Bonehead, I was informed by a number of kind people here that you stole an image of mine.  What a dick.  You're already reported to Shutterstock for the keyhole picks on your pathetic little port there.  Better yank 'em fast you no-talent thieving troglodyte.  Next will be the Cease and Desist order for your stockphoto4free.com site.  Hope you enjoyed the hits there today because I'm making it my personal new hobby to shut it down for good.  You just screwed with the wrong guy. . . .   Keep your day job, Bubba.