A U.S. District Court judge gave jurors an instruction that hammered the U.S. Postal Service after cross examination of Dr. Diana Goldstein — the service’s expert on the emotional distress damages claimed by former postal employee Tony Sansone in his failure-to-accommodate claim under the Rehabilitation Act — revealed what the judge declared was a “flat out violation of Federal Rule of Evidence 703.” The problem, according to the judge, was that the service gave Goldstein a copy of its …