Note: This is a bad idea™. Don’t do it unless you know why you’re doing it.
What you need to do is create a custom directive to render you form, use the directive’s “link” function to grab the form element, and then use jQuery’s serialize() function to generate a string that you could shoot off in a POST request.
Here’s a sample implementation:
Again, you should really only do this if you have a valid reason since you’re really fighting the framework by manipulating data this way.