Shauna To Sex Tape Partner -- You're Screwed

4/13/2010 7:15 PM PDT BY TMZ STAFF
Shauna Sand says her Frenchie ex-boyfriend doesn't have a leg to stand on -- especially the third one -- in his lawsuit over the release of their Vivid sex tape -- and ironically what kills him is another video in which he admits he knew exactly what he was doing when he signed up.