Ha, I will only get flamed for my response, but I'm not going to chicken out for it. I just enjoy the fact that there are pilots that for some reason video tape things that aren't legal, and probably thought it'd never get on the net. I'll be honest, I enjoyed the roll. To me, it looked more like a barrel roll, since the pitch rose and fell during the proper times in the roll. Doesn't look to me that they over-loaded the airframe at any time, or even close to that matter(I didn't see any wing flex, I watched it about 5 times trying to see it.) This is besides the point though.
I'm not for or against this. If you choose to do these extra-curricular activities, you best be aware of the consequences towards you and others that could fly the aircraft in the future. Look at Bob Hoover, one of the best damn sticks to demonstrate an airplanes ability!!! He did things with that Shrike that were amazing and beautiful. If he never stepped out of the box, we would've never seen them.
I'll just finish up with a good quote, "There's a time and a place for everything." Nuf Said