Expert Guest Entry by Shawn Romer Originally published on http://ralawemployment.blogspot.com/  In Flex Frac Logistics, LLC v. NLRB (March 24, 2014), the Fifth Circuit Court of Appeals upheld a National Labor Relations Board (“NLRB”) ruling that struck down an overly broad employer confidentiality policy. The court held that this overly broad policy could be interpreted as prohibiting an employee from…