Stanford is need-blind in acceptance. What do they need the CSS for unless you get in?

You did everything you could to get in because you honestly think Stanford is a good fit for you. You turned in the application already, so it is too late to change anything (believe me, I regret a few things I wrote). There is nothing at all for you to do but sit back and wait to get accepted. That's what I'm doing. One of the questions should have been "What do you plan to do if not accepted?" Why, join Grisha out in the middle of nowhere.

If they don't accept you, they're not taking anyone. :-)