This gist was an attempt to work around https://github.com/emberjs/ember.js/issues/5264 that failed. wanted to save it for later reference if needed.

application-route.js

App.ApplicationRoute = Ember.Route.extend({
    actions: {
        back: function (path, model) {
			console.log('APPLICATION.BACK');
            var transitionObject = App.Transition.create({ 'path': path, 'objectId': model.get('id') });
            this.transitionTo('transition', transitionObject);
        }
    }
});

router.js

App.Router.map(function() {
    this.route('transition', { path: ':path/:object_id' });
}

template.hbs

<button class="btn bg-primary bg-flat" {{action 'back' 'path.to.route' model}}>Back</button>

transition-model.js

App.Transition = Ember.Object.extend({
	path: null,
	objectId: null
});

transition-route.js

App.TransitionRoute = Ember.Route.extend({
	serialize: function (params) {
		return { path: params.path, objectId: params.object_id };
	},

	afterModel: function (model, transition) {
		this.set('path', model.get('path'));
		this.set('objectId', model.get('objectId'));
	},

	setupController: function () {
		console.log("TRANSITIONING");

		var path = this.get('path');
		var objectId = this.get('objectId');

		if (objectId) {
			this.transitionTo(path, objectId);
		} else {
			this.transitionTo(path);
		}
	}
});