Publish to Facebook with a single login?

I'm using the Prime31 SocialNetworking plugin for iOS, and I'd like to allow my users to publish their scores to Facebook. I've been checking out the FacebookGUIManager sample that came with the plugin, but the only way that I've found that actually allows my game to publish something is by using the following workflow:

MyApp - FacebookBinding.login() > (Fast app switch) Facebook App - approve read permissions > MyApp - FacebookBinding.reauthorizeWithPublishPermissions() > Facebook - approve write permissions > MyApp - Post score.

Is there not a way to publish scores to Facebook without exiting my game twice? I understand the need to do it at least once to authorize the app, but twice to publish with this plugin seems excessive. Any suggestions?