How are you going to remove the GP from this tooth?

Below is a video of a demonstration I gave at the Jiao Tong University Dental School in Shanghai. I was demonstrating a method for removal of GP from treated canals. The method that I describe is only one of many methods, but I think it is a good way to begin re-treating. Please watch the video and share your thoughts:

httpv://www.youtube.com/watch?v=D5SeDNOusV4