puppet tool un-distort

Hi everyone,
I have used the puppet tool to distort an image to overlay (and copy) an image on some paper in some footage, the puppet effect worked pretty well and its all matched up,

The next part i want to do is to being the overlay full screen and "un-distort" it back to its original shape.

Basically is there a way of keyframing the puppet tool back to its un-distorted state, or do i have to go back and re-do the process starting from the end of the clip and work backwards?

Many many thanks in advance

Craig


Co-Director Podchains Ltd
Video Producer / Motion graphics designer http://bexmedia.net