I don't understand why they don't face towards the crowd during the ballad? Always threw me off I hope they change it, not bashing their show in anyway I still think they have it this year 1st place!
They are going for an effect I recognize from the Cavaliers 2002 show, where the band faces the backfield and yet the music is louder than when they were facing front. It's very effective when you see it live, not as much through recordings.