It'd be hard to prove though. For all we know someone at the NYT could have made the whole thing up. It wouldn't be the first time
a journalist did that for the paper either.
It just seems weird that any effort would be paid to this at all. If Trump we smart, he'd ignore the criticism and focus on more important things going on in the country. Or just deal with the matter internally instead of blabbing about it on Twitter. Whoever wrote it accomplished exactly what they wanted, they got under Trump's skin.
Although, I still think it's Pence because I firmly believe the two hate one another. Either that or it was Clinton, because her and Trump are still in cahoots.