Action not being sent from component in EmberJS

When I close a bootstrap modal, it doesn't send the action it should (in application js:)

<li><a {{action "showSignInModal"}}>Sign In</a></li>
{{outlet}}
{{outlet 'modal'}}

bootstrap-modal.js:

this.$('.modal').modal().on('hidden.bs.modal', function() {
  alert("Closed");
  this.sendAction('removeModal');
}.bind(this));

routes/application.js:

export default Ember.Route.extend({
  actions: {
    showSignInModal: function() {
      this.render('components.signin-modal', {
        into: 'application',
        outlet: 'modal'
      });
    },
    removeModal: function(){
      alert("Working")
    }
    //...
  }
})

The "closed" alert shows, but the "working" alert doesn't. (The signin modal is a component, with no actions defined, and is just a bootstrap-modal)