Cee Lo Green is resting up for tonight’s Grammy Awards after a back injury put him on bed rest days before the big event. On the heels of his performance with Madonna at the Super Bowl, sources told us “The Voice” judge slipped a disc in his back and had to stay home, missing the Delta Grammy Party in Los Angeles Thursday night. Cee Lo is said to be “on bed rest as much as possible” and had visited the chiropractor. His reps declined to comment.