If you are talking about the "ball type". It is the property that is located in the UI.
You cannot ‘reset’ this, but you can animate it.
Have you watched the rig demo? It will show you the general idea of the rig.
https://cgcookie.com/lesson/multiball-rig-demo
That is helpful so thank you. I was actually referring to the squash and stretch modifications. There is an original size and I was wondering if when you modify the shape for squash and stretch, there was a hot key combo that would set the mesh object back to its orginal size or shape; not necessaryily the skin or texture. Sorry about being unclear in my post. I will watch the multiball rig demo.