Per the info Fran has posted in the media thread there is a pic in the book of Stacy and Cassandra. Stacy wearing only a blazer, Cass wearing DrewP's swat outfit and holding his gun.
The question is how did Hosey get the pic, and why?
My thoughts, he got the pic from DrewP and DrewP had a motive for giving it to him. Being out of context, my guess is that DrewP gave it to him to try to discredit Stacey and Cass. According to the article, DrewP has refused to say whether he took the pic or not. I just can't see Cass giving it to Hosey.
Sounds to me like maybe a drinking party thing. DrewP was evidently a wedding party photographer of some sort, maybe fancied himself a 'photographic artist'. Probably got them drinking, then when he couldn't get both to get naked settled for getting Cass in the swat outfit.