Yes, the «end of the blade» is simply the late 20th century temperature record. (steynonline.com)
That fact shows conclusively that theories that attempt to explain the twentieth century temperature record without anthropogenic factors being the dominant factor post 1940 (and a significant factor prior to 1940) are doomed to failure. (skepticalscience.com)
Is it «tuning» of the 20th century temperature record if your decisions are justified on the basis of these emergent constraints alone and not the GMT evolution with a fully coupled model? (gfdl.noaa.gov)