Squeaky clean, my ass! Those Backstreet Boys have some explaining to do now that the one that looked like he wandered off the street has wandered into rehab. According to the Backstreet camp, A.J. McLean - the "wild one" of the bunch (you could tell by the black cowboy hats he wore) ñ was admitted into rehab yesterday for alcoholism and depression. Appearing on MTV's Total Request Live (TRL, if you're cool), members Kevin Richardson, Howie Dorough, Nick Carter and Brian Littrell confirmed the news. According to his bandmates, McLean confessed his problems to them over the weekend, and several tour dates have been canceled due to the revelation. "He came to us yesterday for the first time," Littrell said. "I heard him say, 'Guys, I have a problem and I need to get help.' We figured this was the best for him. It's all about him being healthy." McLean, 23, will be in an undisclosed residential rehab center for 30 days.