Tim,
Sorry to here the Aurora went in....

I had a Tipo that did the same thing. The wing skin came loose from the foam core. Southern Sorghum was used. One snap is all it took. The Tipo was some what controlled to the ground where it landed into soft grass/hay field that wasn't cut yet. After further investigation.... and going off the other wing panel and stab (which was not touched) it would of appeared the Sorghum expired first.... then the plane followed. I cut one cut one half off the stab off the fuse after I was able to literally pull the skin of the wing with my hands. Sure enough....same goes for the stab. I was able to remove the stab skin with very little effort. From that day on.... I use nothing but epoxy or the newest trend, Gorilla Glue to do skins. Once again... sorry for your loss Tim.
Mark