Get the original photos after using PhotoSphere? Using the new PhotoSphere camera mode to take a 360°×180° panorama, you have a stiched together image. Is it possible to get access to the original photos that were used?

I really like the PhotoSphere UI and method of taking panoramas, it's very well done. However the panorama software isn't great (it is a phone after all), and I'd like to use something like Hugin to generate the panoramas myself. Is there anyway to get access to, or to save, the original images that went into creating the PhotoSphere?
I do not believe there is a way to do this as stock, since the photos taken are stored temporarily and are deleted as soon as post-processing is complete. If you want to develop your own solution to this by creating a 'hook' for the opensource app "Focal" which has the same features as the stock camera. (Focal: https://play.google.com/store/apps/details?id=fr.xplod.focal&amp;hl=en)