More USHCN Madness

http://stevengoddard.wordpress.com/2012/08/07/more-ushcn-madness/
The graph below shows last month's version of USHCN final minus TOBS. TOBS itself is completely out of control, but what is this additional steadily increasing two degree adjustment about? It is not documented by USHCN, which only admits another 0.2F above TOBS