You misunderstand me, I think.
In the first image you posted, the glyphs themselves are as an AE would have written them vertically.
It is the cartouche shape which encircles the glyphs in this image which is the wrong way round for a correct rendering of the glyphs. The horizontal line of the cartouche would be at the bottom, not at the top. Does that make sense?
The inscription would NOT have been painted in situ with glyphs oriented 90 degrees clockwise ... the idea of in situ AE inscription is a nonsense. They didn't write vertical inscriptions which read from bottom to top.
They did, however, write lateral inscriptions that read from right to left and then, if it is the stone itself which later was placed in a different orientation, it is perfectly plausible to consider it to be nothing more than a quarry mark.
Post Edited (17-Jul-14 18:08)