AJ's MOM MOVES HIM TO LA TO KEEP HIM AWAY FROM PARTY PALS

KEEPIN' 'A.J.' O.K.:

To stop her "Backstreet Boy" from backsliding, A.J. McLean's mom fired several backup musicians and crew members who did drugs with him, relocated him from Orlando to LA -- AND changed all his home and cell phone numbers! But watch it, Mom: A friend tells us A.J.'s still in touch with his party pals. Worse yet, that guy who supplied A.J.'s drugs says they've made a date to hook up in the next few weeks. Said the friend: "Relocating A.J. to LA is absolutely the worst thing that could happen. Now he'll be surrounded by temptation 24/7!"