Larsguy,
You said that Russell publically denied being the "faithful and wise servant" do you have a reference for this?
In the beginning Russell taught that the FDS was composed of a class. BUt as early as 1896 (over 20 years before the "Finished Mystery") Russell started teaching that the FDS was an individual. In 1900 and 1904 year Watchtowers he argued for the slave being an individual. He also published several letters during his lifetime which praised him as being the salve. It seems that he promted the idea of him being the slave.
You are correct in saying that in the year 1927 the teaching that the FDS is a "class" was returned to. Although the current leaders of the Watchtower Society have covered up their history by saying that there was a classs all along.