Were Freddy Franz still around I can imagine he would have a field day with this new support for his theology - much as he did in the 1970s when George Howard's article came out about the tetragrammaton in the NT.
I don't know enough about your main point to comment, but if your comparison with the George Howard study is anything to go by......I have my doubts.
A field day Freddie may have had, but only by ignoring the overwhelming evidence against the Tetragram ever having been present in the NT. The JWs quoted Howard very selectively, but how many JWs researched Howard's work?
How many have a scan of a letter written by Howard following the redating in 1988 of manuscript p46 to the first century? How many know that Howard wrote:
"the Tetragram was not used as I suggested" ...."this weakens my theory..." "The Jehovah's Witnesses have made too much out of my articles. I do not support their theories".