A convicted killer has become the second person to get a retrial on murder charges because of accusations the judge in the cases had abused drugs.  Jurors found 55-year old Gregory Muse guilty in March of first-degree murder after a trial overseen by then-Saint Clair County Circuit Judge Michael Cook.  Cook was arrested two months later on charges of possessing heroin and a having a gun while on controlled substances.  He has resigned and pleaded not guilty.  Muse was scheduled to be sentenced yesterday.  But Judge Robert Haida agreed to his request for a new trial.  Muse had argued that Cook appeared to slur his words during the trial.  Cook’s attorney isn’t discussing that.  A new murder trial has already been granted to another man convicted in proceedings overseen by Cook.