Jim Henley's theory:

If the Paul campaign says, “Actually, those newsletters were written by Lew Rockwell,” then suddenly Lew Rockwell is the story. How on earth does making Lew Rockwell more visible help Ron Paul? Right now Paul has to answer, lamely, for the content of the variously named volumes of the Send Ron Paul Your Money! newsletter series. Formally connect them to Rockwell and Paul also has to answer for the contents of every issue of the Rothbard-Rockwell Report, much of the content of mises.org and Rockwell’s own zigs and zags across the years of his LRC column.

Shikha Dalmia thinks Paul should give a speech along the lines of Obama's Reverend Wright speech:

Paul’s choice … is to try and proactively shape the events that will surely follow—or get into a defensive crouch as they unfold, attacking the attackers, playing the victim. If he does the former, he might at least be able to save the movement he has created if not himself. If the latter, he risks taking it down with him.