Here is some more info about Russell and the Freemasons
http://www.pastor-russell.com/life/mason2.html
I'll try and look up where and who said that his father Joesph was a high level Freemason
The information that I've read was that he was somewhat cool to the Masons although it gets confusing because some info states in his own words
he didn't like the ritual aspects of the Masons and thought they were away from true worship of what a follower of Christ should be involved in.
In one of his speeches he stated that he had no grievances or anything bad to say against that brotherhood.
Maybe he was thinking on going light on them since he was giving talks and using their halls on occasion.