Does this actually work? Your calling a function on the object itself, not an instance of.. so this is probably going to do something weird.

Since there's no guarantee we're even on the post list page when the post list item is shown (we reuse this view for related posts), it might be better to use an event to trigger the pagination update. Thinking about it now.. if you bind to collection events (https://github.com/marionettejs/backbone.marionette/blob/master/docs/marionette.view.md#viewmodelevents-and-viewcollectionevents) in the PostListView that will probably do.. ie add this in PostListView
```
collectionEvents: {
    "remove": "updatePagination"
  },
```