I was hoping to see a reply post by one of sales experts (I guess you were too).
Are you sure this dealer was looking at a Sahara X, and not last year's Rubicon X?
Did you try any other dealers, to see if they too can't order a Sahara X? That would rule out entry error and simple allocation problems.
If true, this would be like the record for a shortest run of a special edition. Though, also if true, I wonder if it could be tied to the end of the winter X Games?