Yes, and I also followed the thread on Evo forums. I believe that the issue has been discussed on this forum as well, about a year ago.
I think that the gunk is caused by a breakdown of non-E85 resistant materials in the fuel system, likely lines, filter, pump parts, or o-rings. Just my 2 cents. I have never seen anything other than squeaky-clean components in my car, and I have been running E85 almost exclusively for over 2 years.