There are some great articles out there on this. One on UFC and one on Yahoo in particular. I actually don't think he was a tormented soul towards the end of his life. I think he went through a rough patch, but it looked obvious at the end of his life that he just enjoyed being in nature. He was definetly and odd character, but he just seemed like he'd be so cool to hang out with and that he'd invited along or over to his house just for fun.
Sometimes I feel like his minimalists attitude is the right way to go. Screw all this congestion and stepping on others to get more things in life. I think Evan had it right and he will be missed in the MMA community and even moreso by his friends and family.