No, he didn't. Came closer than anyone in awhile, but there was no balanced budget. They played games borrowing from SS, just as Newt criticized politicians for doing (during the Cain/Gingrich "debate", where he also lied about the balanced budget).
Comingling Social Security funds pre-dates Newt’s speakership. He was using the rules as they were in place at the time. Doesn’t mean he can’t support changing them.