I might be wrong, but in TBBT Georgie's tire shop is in Dallas, not their small town. If so, he sold that business to Rueben and moved on. There is absolutely no connection between TBBT and George and Mandy in regards to Ceecee. If George and Mandy get divorced, Sheldon would have no relationship with her. But he still should have won with Ceecee. The worst thing George and Mandy has done is send Sheldon off to California after his father died and completely abandoned him.