SPARTANBURG, S.C. -- As the acrimony intensifies between Rick Santorum and Newt Gingrich's campaigns, the former Pennsylvania senator on Wednesday poked fun at the former speaker for playing nice with Nancy Pelosi.

"The only person I ever sat on a couch with is my wife," Santorum said, referring to the Climate Change television ad Gingrich taped with the House Democratic leader.

Making a serious moment out of the zinger, Santorum said the decision to sit with Pelosi "matters."

"Judgment matters. When the winds are blowing what we've seen is (Mitt) Romney and Gingrich, they put their sails up and go," Santorum said.

The couch image with Pelosi, who is the face of liberal America for many conservatives, and the ad, which was sponsored by a group headed by former Vice President Al Gore, has repeatedly been used against Gingrich during the primary process.

It's also a decision that Gingrich suggested he wished he could take back.

"Sitting on the couch with Nancy Pelosi is the dumbest single thing I've done in the last few years," Gingrich has said.

During the Spartanburg townhall at the iconic Beacon Drive-In restaurant, Santorum leveled the counter-attack after Gingrich repeatedly urged Santorum to drop out of the race so conservatives could rally around one Not Romney candidate.

Santorum described Gingrich's suggestion as the height of "hubris and "arrogance."

"Everyone who wants to be in this race should be in this race," Santorum said to cheers. "I'm not going to point my finger at someone and say 'I'm better than you, you should get out.' That's not how South Carolina is going to decide this race."

Santorum also told Fox News on Wednesday morning that the Iowa GOP will correct a mistake in declaring Romney the winner of the Jan. 3 caucuses by 8 votes.

There is currently a certification process occurring that Santorum said would erase Romney's win and make him the new victor.

Wednesday at 6 p.m. ET is the deadline for all 1,774 caucus precincts to deliver to Iowa GOP headquarters the final tally for each precinct.

The numbers are supposed to be checked by the various candidate representatives before it's signed off by election officials. 

"I think we are going to win," Santorum said after his Fox & Friends appearance.

Fox News' Steve Brown contributed to this report.