So what? Whether the players used to be in the locker room a decade ago when the national anthem was played is meaningless.  It pretends like there's something WRONG with them being on the sideline when it's played now.  As if "OMG, how can they possibly stand for 90 seconds during the tradition honoring our country?!?!?  How outrageous!!!!!!!".  

Good grief.  Poor babies can't stand respectably for 90 seconds during a short ceremony???