Remove views with nice animations on iOS

In iOS is very simple to create effective animations on UI components.

For an app I'm currently working on, I would like to create an animation on a set of views, vertically aligned. When user taps on a button inside the view, the app should start an animation that translates and rotates te view offscreen, while fading it at the same time. At the same time, all the views below it, should react by translating up occupying the space left by the removed view.

You can check the rest of the article here:
http://mobilengineering.blogspot.it/2012/10/remove-views-with-nice-animations.html