Knockout Posting nested (main part) form without ajax (message in the usual form)

I just went through knockouts and watched the video presented on the site . its quite interesting how we can improve our js code using knockout. I also looked at examples where it creates nested or main forms of forms, but these forms are always passed through ajax. Is there a way to post a nested form without ajax without breaking asp.net mvc default modelbinding. In particular, I want the behavior, as in this demo version of the code , I created some time ago . but now I want to do this with knockoutjs and without ajax