tyler kost , now 19 , from outside phoenix , was arrested last may for alleged sexual crimes against 13 girls between the ages of 13 and 17 .
kost 's defense said new evidence taken from facebook and instagram proves the women lied about sexual abuse .
the pinal county attorney 's office says kost faces 30 charges in three indictments ranging from sexual abuse to child molestation .
three accusers and witnesses referred to the movie ` john tucker must die , ' where ex-girlfriends take revenge on a former boyfriend .