The writer/producer of upcoming film "Dogs in Pocketbooks" is backtracking over statements he made suggesting the movie is based on the colorful life of Lindsay Lohan - after the actress' mother threatened to take legal action. 
 Lydia Hearst and Joan Collins have signed up for roles in the gritty  drama, about a troubled young star making her way in Hollywood.  Screenwriter Charles Casillo riled Lohan's parents after admitting  Hearst's part is "obviously based on Lindsay Lohan" earlier this week. 
 He told the New York Post, "(The movie) is in no way mean-spirited  towards Lindsay. It's the kind of thing she has spoofed about herself in  the past. It's more of a satire about the crazy people around her." But  the writer/producer is rethinking his pitch after the "Mean Girls" star's mum Dina threatened legal action in a bid to scrap the movie. 
 Casillo tells TMZ.com his comments have been "totally blown out of  proportion", and insists the character was inspired by several young  starlets, including Lindsay, Paris Hilton and Britney Spears, and Hollywood icons including Marilyn Monroe and Jean Harlow. 
