My guess is, the priests wanted someone besides him on the throne, that he was too goofy, and golly, it turned out the priests were correct. :’) The Aten, his sun-disk deity, was something that ran in the family (it goes back to Old Kingdom times, and may have been Thutmose IV’s own favorite), and I wonder if the whole scenario has more in common with the House of Tudor than with most other parallels which have been drawn.
It is so nice, in either case, to know that Royal families can be screwed up as much as us common folks.
EPIPHANY
Obama=(Royal+E)2(screwed)n