No. South Carolina is a recourse state. If a borrower defaults on a mortgage and the foreclosure sale doesn't cover the full debt, the lender can pursue a deficiency judgment against the borrower for the remaining balance. This applies to both judicial and non-judicial foreclosures (though SC primarily uses judicial foreclosure).
Borrowers should understand this liability; some states (e.g., California, Arizona for purchase-money loans) are non-recourse, limiting lender recovery to the collateral.