Can't delete Backbone.View causing zombies - backbone.js

Question

I can't seem to completely destroy my Backbone.Views. I have tried all the suggestions and still they turn into zombies and start an apocalypse on my memory. Please tell me what I am doing wrong.
When I toggle back and forth between routes /access and /settings the browser creates new instances as expected, the close method fires and completes, however the profiler in chrome says something the previous instances are hanging around.
My BaseView
class BaseView extends Backbone.View
# -------------------------------------------
isRendered: false
autoDestroy: false
# -------------------------------------------
close: ->
log 'Closing View', #, #model
#onClose() if #onClose?
#remove() if #?
#unbind() if #? # Unbind all local event bindings
delete #$el # Delete the jQuery wrapped object variable
delete #el # Delete the variable reference to this node
delete #
log 'Everything is destroyed', #
# -------------------------------------------
module.exports = BaseView
My Router
class Router extends BaseRouter
name: "Router"
container: "#content-container"
routes: routes
#----------------------
access: (slug) ->
AccessPage = require '../view/page/access-page.coffee'
accessPage = new AccessPage()
accessPage.render()
#showPage accessPage
#----------------------
settings: (slug) ->
SettingsPage = require '../view/page/settings-page.coffee'
settingsPage = new SettingsPage()
settingsPage.render()
#showPage settingsPage
My BaseRouter
class BaseRouter extends Backbone.Router
currentPageView: null
pageClass: '.page'
# -------------------------------------------
showPage: (view, hidePages = true) ->
#hideAllPages() if hidePages
#currentPageView = view
$(#container).append view.$el
log 'showPage', view.$el
view.$el.show()
# -------------------------------------------
hideAllPages: ->
if #currentPageView?.onHide?
#currentPageView.onHide()
if #currentPageView? and #currentPageView.autoDestroy
#currentPageView.close()
$(#pageClass).hide()
One of my Views
class AccessPage extends BaseView
name: "AccessPage"
id: "access-page"
autoDestroy: true
className: 'page'
#----------------------
initialize: ->
log #name, "initialize"
#----------------------
render: ->
log #name, "render"
#$el.html template
title: "Access"
#isRendered = true
#----------------------
module.exports = AccessPage