The best way that I know how to do such a thing is to twist his limbs around a few times then bend them to impossible angles. He just kind of opens up. The resulting carnage can then be easily painted in postwork. Also don't overlook the disembodied head and hand that come with Poser. Hair and textures can be applied to the head and I think you can even give it facial expressions...LOL. I almost posted something that I did a while back while experimenting with this tactic, but after previewing the post, I removed it. It would have broke about every major rule here at Renderosity. Good luck!