The sister of a slain former Washington Redskins dancer stood up in a Las Vegas courtroom on Wednesday and cursed the man accused of strangling and dismembering her sister. Jason Griffith, a performer in the Cirque du Soleil "Love" show at the Mirage, could face the death penalty in the slaying of his ex-girlfriend Debora Flores Narvaez. She was a dancer in the "Fantasy" show at the Luxor, and had been was an ambassador for the Redskins cheerleaders in 2007 and 2008. Police said Griffith choked Flores Narvaez, chopped off her legs, then encased her body in concrete. Scott McCabe