It's been a long time since I've given any time to this one, and I'm sure there are some great debunking theories all over the Net by now. Several years ago an an old forum frequented by exJWs (ChannelD, or something like that) I spent a great deal of time trying to convince a fundamentalist that her favorite Christian "codes" were there because of mathematical probabilities.
The final experiment to answer her Yeshua is YHWH claims, was to ask her if she would accept various Hebrew phrases to mean Yeshua is Satan. Then we calculated the probability that that phrase would occur. Based on the frequency of the Hebrew letters it would actually more often in the Masoretic Hebrew text than her pet phrase. After I found a couple occurrences, however, she decided that it was more important to continue to believe in this stuff.
Funny thing is, the fact that Christians could find Christian phrases "foretold" in the Hebrew did a lot to put a damper on the entire discussion which started with Jewish "researchers" who were finding predictions of Rabin, etc. Jewish researchers tried to show how the Christian phrases were more based on mathematical chance.
Anyone who wants to check this out for themselves can download Masoretic text files, remove the spaces, and run pattern matching programs against it. You can even use Microsoft Word's pattern searching macros to do the work for you.
Gamaliel