Node.js object-oriented controllers
This looks good to me,


As you mentioned, as_view stands out a bit, but I see where you are coming from
I am not sure why you do not declare GET and POST, then you do not need to use toLowerCase(), are you worried the caller will now uppercase the verbs?
You should think about error handling, you should have some framework for it


All in all, I would still suggest that learning and using Express.js might be worth it.