DETROIT -- Barry Sanders, one of football's smoothest backs, admits the way he left the Detroit Lions was awkward.During his first news conference since his shocking retirement on the eve of training camp in 1999, Sanders said Tuesday, "The way it was done may have been a little clumsy."Sanders announced his retirement through a written statement released by his hometown newspaper, The Wichita Eagle."Even had I retired in a more-graceful way, it still would've been taken the wrong way by a lot of people because I retired after 10 years," Sanders said. "The issue was not how I retired, but when I retired."Sanders did say he should have returned calls from former Lions coach Bobby Ross, who tried unsuccessfully to contact him before the 1999 season."It was probably good that I did the book, because I'm not sure when or if something like this would've occurred," Sanders said of his talk with reporters. "I know that's not good for me to say, but I can't think of any other scenario where something like this would've happened."In a certain sense, it does lift a burden and I think it's significant that it happened."