Commentary: The motion filed by Sorrell Trope reportedly came the same day that Spears missed her latest appointment to be deposed by Kevin Federline's legal camp. Spears cited anxiety and physical illness as the reasons for missing the scheduled appearance Dec. 12. Trope has been representing Spears since the pop star parted ways with attorney Laura Wasser in September. The law firm cannot withdraw from the case of their own volition and must now wait for the judge's ruling.