A Homewood clergyman waived extradition Tuesday during a brief hearing at a courthouse in Nashville, Tenn.  53-year old Richard Shahan, a former associate pastor at First Baptist Church of Birmingham, was arrested at the city's airport on New Year's Day, while trying to board a flight to Germany.   Shahan is accused of killing his wife Karen, at the couple's home.   Shahan is expected to return to Jefferson County within 10 days.