Well I dare say this is one of the first times the phrase has been used in the context of religious scholarship. I don’t think Christian Gottlob Wilke ever said it.
This article is badly written in general. So the back-formation of munge is unnecessary and, in my view, inelegant. Moreover, there is no such thing as a “Christian Old Testament.” I suppose one could say “What Christians call the Old Testament” or some other construction. A more scholarly word would be “Hebrew Scriptures.”
edit: my last two points were arguments against the project itself, not the article in question. deleted.