The Second Mrs. Gingrich did a long interview with Esquire in 2010; I don't imagine her ABC interview is going to have anything new in it.
Here's the article:
http://www.esquire.com/features/newt-gingrich-0910
It doesn't matter to his supporters; Gingrich isn't running on a platform of moral superiority, à la Santorum; he's running on a platform of "Black black blackity black black. Black. PS: Black black black."