The Santorum campaign stressed that the media should not be reporting in any way that Michigan was a win for Romney considering that the Romney campaign has continually stressed that they are only concerned with delegates and the delegate count here is a tie in Romney’s home state. Also, the Romney campaign outspent Rick Santorum anywhere from 2-1 to 4-1 according to various estimates and so this can only be considered a “disaster” for Mitt Romney or, at best, a tie.We'll see if the point gains traction throughout the week.
Meanwhile, check New York Times, "Ohio Offers Chance for a Santorum Rebound."
And National Journal, "Can Santorum Broaden His Base?" (That point is addressed at the interview above, in which Martha McCallum asks Santorum about his comments on women from his speech last night.)