The reference is to "The Wizard of Oz"
...which I thought was appropriate, especially considering your point of origin.
The line concerns the unveiling of the true identity of the Great And Powerful Oz: not a large, noisy and dictatorial "wizard", but a smaller, quieter, and more concilliatory "professor".
Re: "my" board: I didn't sign it officially. Unless I do, I'm speaking for myself.
And incidentally, please see a proctologist about that bug. You have a lot of good things to say. It would be a shame if all that signal got lost in the bad-tempered noise.