Based on an almost ridiculous outpouring of support from a number of blogs, it turns out that "disreproachable" actually IS a word, and I don't have to edit my splash page graphics after all. Whew. Maybe I can spend the THIS weekend with my kids, instead of slaving over this blog like I normally do.
Here's a typical example of people crying out for recognition of the word "disreproachable:"
So I sent the following definition to Urban Dictionary. Let's hope they see the wisdom of my post.