I believe that's exactly what Jonah Goldberg did at NRO after Ann wrote her [in]famous "convert them to Christianity" column there right after 9/11.
IIRC, Jonah said there was more to it than just that column, but that approach does seem to be the one to take when one believes (rightly or wrongly) that a columnist has crossed the line.
I'm sure that if this feud is real and Farah does eventually drop Coulter's column from WorldNetDaily, that he will sight other issues besides just this feud between he and Coulter. Similar to the way Jonah Goldberg justified dropping Coulter's column from NRO after 9/11.
He'll probably cite her ongoing attacks against Birthers as another reason why he no longer carries her columns.
I've heard Farah a while ago on the G. Gordon Liddy show state that he has heard from alot of folks questioning why he continued carrying Coulter's column on WND knowing her attacks against Birthers and heard him defend her saying that he wasn't going to throw Coulter overboard over this one issue, but he may have changed his mind now, if this feud with Coulter is real and not staged to get both their names in the news and more hits for their websites.
If you still see Coulter's column being carried on WorldNetDaily two weeks from now, then you will know that this 'feud' was a staged 'feud'. I know if I were Farah and if this feud is real, I would have removed Coulter's column's and any trace of her from WorldNetDaily yesterday.