application_route.js

    sessionInvalidationSucceeded: function() {
      this.transitionTo(Ember.SimpleAuth.routeAfterInvalidation);

      // unload all store data on logout
      var store = this.container.lookup('store:main');
      var typeMaps = store.get('typeMaps');

      Ember.keys(typeMaps).forEach(function(type) {
        var key = typeMaps[type].type;
        store.unloadAll(key);
      });
    },