Turbotax would never know that title was in originally in your name only and now is in both. Nor do I see an issue. you could have gifted your spouse a 1/2 interest in the old property before the exchange or gifted 1/2 after you alone acquired the replacement property. there is no reporting of gift between spouses, except in certain cases which do not seem to apply in your situation, so a gift tax return would not even be required.
