Matt Slocum/APAn upstart political committee is grappling with the consequences of mixing money and friendship.In a letter to the Federal Election Commission last week, the Existentialist Republic PAC accused its former treasurer, Clifford Michael Pickens, of misappropriating more than $7,400.But Pickens told NOTUS that it’s all a misunderstanding and he had failed to respond to PAC founder Chris Armitage’s repeated inquiries and a legal demand …