OK, it's late here and it's difficult for me to type but I want to add just a bit of reply:
Firstly, Bigdog, regarding the holy spirit, the Bible may be using what in literary terms is known as personification and so the spirit speaking or whatever does not automatically make it a person in and of itself.
Secondly, Hellrider, comparing "ego eimi" in John 8:58 to "ego eimi HO ON" in Ex. 3:14 in the LXX and concluding that Jesus is calling himself Jehovah ("I AM") is a ridiculous argument. It supposes that, speaking in Aramaic, Jesus' Aramaic words were instantly translated in the minds of the Jews and so understood in Greek by the Jews, who jumped back to Exodus 3:14, but, then, instead of thinking of Exodus in Hebrew, thought of it in Greek (i.e. the LXX), and entirely forgot about the HO ON part, which roughly means "The Being." Jesus didn't declare to be "ego eimi HO ON." None of your posted argument holds water unless you want to say the later Johaninne community put those words into Jesus' mouth and manufactured the Jews' vehement response. Which renders it entirely meaningless since you'd have to make an admission the conversation never actually took place.
Thirdly, there are no extant MSS of the NT that have existed. All we have are copies, and some bad ones at that, and very many that disagree with each other. None of these copies contain the Tetragram - so the WT asserts the original autographs did contain it, some 237 times, and it was removed. It's too late and I don't feel like finding my WTCDROM but in the Appendix of the big brown study version of the NWT the WTS quotes George Howard's hypothesis that it could have been there and removed. Howard thinks the WT has gone too far with his theory. All ya gotta do is read it to find the WTS' explanation as to why they used "Jehovah" instead of "Lord" in the Christian Greek Scriptures (as well as a few Hebrew-to-German translations that decided to "restore" the divine name, designated J with a corresponding #, in the footnotes).