"He is satisfied that the allegations are a product of economic motives," Federline's attorney, Mark Vincent Kaplan, tells the Associated Press. "They are as baseless as they seem."
Among other claims, the guard alleges that Spears, 28, engaged in sex acts in the presence of her and Federline's two young children – something Federline also does not believe.
Kaplan said Federline, 32, who has custody of Sean Preston, 4, and Jayden James, 3, takes the kids' welfare extremely seriously, and that an investigation into Fernando Flores's claims prior to his lawsuit turned up nothing.
Federline and Spears were married in 2004 and split two years later. After a long court battle, their custody settlement was finalized in 2008.