There has been only one ratings direction on Sunday night lately — down — as the night is quickly losing its status as one of the most watched on broadcast television. ABC’s top dramedy Desperate Housewives (3.3 rating/8 share in 18-49, 10.4 million viewers) returned to originals after a month-long hiatus to a new series low in adults 18-49, with its companion Brothers & Sisters (2.2/6, 7.9 million) similarly hitting an all-time low in the demo. NBC’s Celebrity Apprentice (2.6/7, 6.9 million) matched the show’s series low 18-49 rating from last week. CBS won the night with the Academy of Country Music Awards (3.2/8, 13.1 million), which was, yes, you guessed it, down from last year (by 16%).