title: How to prevent navigation when app is recovering from Tombstone?
body: <p>I have an app where, when the app is tombstoned, I want to restart the app again in it's "new" state on its home screen.</p>
  
  <p>But by default, the wp7 framework wants to navigate you back to whatever page you left off on.</p>
  
  <p>How do you stop this behavior?</p>