It was really fun! I'm sure my neighbors thought we were nutty unschoolers once again, but do I care? NO!
The boys were really good about cleaning it up. A few seeds remain but those will disappear in a few days as the critters find them.
When we were finished, DS12 said he felt relaxed now that he had gotten out all that aggression. So I guess it was a stress release as well.
The boys figured out the pumpkins had froze a little so it was more difficult to break them. DS12 experimented with making cuts to see if that assisted in how they fell apart. They also found the moldy parts broke apart more easily.
Of course someone brought up, "What if this was your head?!" Yes, that's why we wear helmets!