Is it possible to redirect the browser to nth step in the onepage checkout? If so, how would one go about doing it?

I'm working on a payment module and have a sort of "cancel" action that i would like to return the user to the step in checkout where you choose the payment method.

I currently return the user to the first step of the checkout like so:

$this->_redirect('checkout/onepage', array('_secure'=>true));