I prepared a 709 Friday and had the same issue.  Since the return had to be filed on paper (I don't think ProSeries lets us do electronic on the 709) I just over rode the wrong Social Security number on the applicable spouses consent form.

Then, to be extra cautious, I over rode the "Printed name of consenting spouse" line on each consent form and added their own (the signer) Social Security number.

I figured that was more efficient than trying to deal with ProSeries support which is worthless.