I don't think I've ever used "Microsoft Office Document Imaging". But then again, I never install the full Office suite.
I think you're asking about vertical writing (Japanese comes to mind). Vertical alignment usually looks like this:
...which is very easy to OCR. For text written like that... well, I don't think many books (or sections of books) are written that way so it shouldn't be too much of a bother to add it manually.