Tim Adams was a joker who infiltrated a racist group and made up this story to see what people's reactions would be. He styles himself as a sort of "gonzo" journalist. I figured this out after viewing his Youtube videos, but people will just latch on to what they want to believe is true.
I did a google search “Tim Adams confessed” ....
http://www.google.com/search?q=%22Tim+Adams+confessed%22&hl=en&num=10&lr=&ft=i&cr=&safe=images&tbs=
No results yet. I’m no great authority on him and had been out of the research network for several months, but if you have his confession, please show me a smoking gun link.