It looks like you're working off of the dev branch. The code you were working with has been rolled back because it wasn't working properly. If you still have the issue let me know, and sorry about that!
The code below will stop the current route controller from running (stop any downstream hooks and the action method from being run) and call Router.go('/anotherpath') which will cause a new route to run.
this.redirect('/anotherpath')