LOS ANGELES -- Britney Spears and her new attorney say her father is trying to get about $2 million in payments before stepping down from the conservatorship that controls her life and money, a move they liken to extortion in a court filing Tuesday.The document filed by lawyer Mathew Rosengart says the upcoming scheduled accounting of the conservatorship, which James Spears says he wants completed before he steps down, will mean significant payments for him.“Britney Spears will not be extorted,”