Its the classic illustration of the type of question that assumes a fact without evidence. ie A classic trick question, now I don't think Rome structured his question that way but Stern clearly viewed it as an unfair question to ask him.
That's how I saw it too. I think a lot of people though around familiar with what the question actually implies.
To those who don't know, its a known 'trick question' technique like Fafnir said, where you have to assume something, whether true or not, to answer the question as a whole, in this example, Rome would have to assume he had 'beat his wife' just to answer the question at all.
Stern felt that Rome was implying that his question was a legitimate one, while Stern felt it was as outlandish as the example he used. I don't think Rome framed it in the classic context, but really asking a commissioner of a professional sport whether or not a major element of keeping their league's integrity intact was 'fixed' is a pretty offensive question to even be asked with a straight face.
"loaded question", that's what I was looking for.