NASHVILLE -- San Francisco 49ers CEO Jed York was all smiles as he casually hung out in the victorious locker room Sunday night. He watched his players get ready for a nine-hour flight to London where English fans will be treated to one of the hottest teams in the NFL.It was a stark difference from the last time York was in the 49ers locker room. After a loss to the Indianapolis Colts on Sept. 22, York spoke glumly to the media about star pass-rusher Aldon Smith leaving the team for an alcohol treatment center.