"The division runs deep and very furiously. How could it not, given how publicly Harry and his wife Meghan have publicly trashed the royal family on global television this year?
"If one of my brothers suddenly went rogue and appeared on TV with his wife to spray-gun the rest of the Morgans as a bunch of nasty uncaring racists, he wouldn't be getting a Christmas card any time soon."
The one thing that could reunite them would be their mother, Morgan claimed.
"She was an unpredictable, high-energy whirlwind of radiantly beautiful, hugely charismatic drama. That, in a sense, was her magic.
"It's not so hard to guess what she would have wanted most for her big birthday: peace and harmony between her sons.
"William and Harry's feud would have broken Diana's heart."
Morgan claimed the princes would have to find it in themselves to back down and show forgiveness - and added that while they share many of Diana's good qualities, they've also inherited her stubbornness and "refusal to give an inch in an argument".
So it's not surprising, he said, that the "simmering cauldron" of the strain they were both under as royals finally spilled over.
"But as they stood there together today, unveiling her statue and allowing themselves a few grins and laughs, I detected the first real glimmers of a possible rapprochement.
"And somewhere, Diana was cheering them on."