The charges against Parx trainer Felissa Dunn brought when Pennyslvania State Horse Racing Commission investigators claimed to have found syringes in her barn has been dropped after an internal investigation revealed that one or more of the investigators made material misstatements of fact, according to a ruling posted on the HIWU website. "While obviously we are pleased that these ill-founded charges were dropped, the chain of custody was always in question and even without this discovery on the eve of the hearing, the fact that Miss Dunn was ever charged...