Splitting blog. Is it possible? Complicated question..

I am using Network Theme. My site is tutuology.com. Currently, I have my front page and my preexisting blog all running together. Is there any way that I can separate my blog entirely from the Tutuology site and have it show up in the "blogs" section or place it in the menu as the tutuology blog? I want to do this b/c Tutuology is really not a blog...it's purpose is to be a platform and marketplace for other blogs & shops.

I don't want for people to have to look through my blog if they don't want to. I would just like the basic function of Tutuology to be front and center, then for my business blog to be an option to view if desired. Does this make sense?