Britney Spears is trying to take back her career. Not only has the pop tart been back in the music studio and taking regular dance classes, an insider claims she fired her manager of several months, Larry Rudolph, on Friday. Spears, who’s been suffering from severe postpartum depression, blames Rudolph for recent missteps, including introducing her to her nemesis, Paris Hilton. There may be legal ramifications as she signed a multi-year deal with Rudolph. But, since she just rehired her one-time p.r. woman, Leslie Sloane Zelnik, we’re sure it will all be spun nicely in the press. Sloane didn’t know about Rudolph’s status when contacted.