There is another guy I see from time to time on the History Channel that has erected several very tall obelisks (50 feet) using the sand pit method. You still have to get it higher flat but they stand right up. Still there is a serious mystery as to how the old tribes did all this stone moving without killing their societies.
The sand pit method is interesting in that it opens a Pandora’s box of other mysteries. I’ll admit it’s possible, but unlikely. The ability to move that much mass around without leaving a trace, namely. Several obelisks arrayed in one place, as though several small mountains of sand were moved there, removed again, moved there again, and again removed, over and over. And then there’s the task of getting those huge stone blocks up those small mountains to begin with. However all-powerful those Pharaohs were, we’re underestimating them in that case. They did it somehow, though, I’ll grant that, we just don’t know how. All our theories wash out or are inadequate.