Newt Surge in SC?

According to a South Carolina InsiderAdvantage poll, Newt Gingrich is surging once again:

The poll of 726 registered voters was completed Wednesday night and offered the following results:

Romney -- 23 percent

Gingrich -- 21 percent

Santorum -- 14 percent

Paul -- 13 percent

Huntsman -- 7 percent

Perry -- 5 percent

I have not seen any other polls like this, so this may just be an outlier. Could Newt come back again? We've seen crazier things during this campaign.