I have created my own workaround that does not require deleting then printing then going back and reentering what was deleted or any of the other convoluted workarounds suggested. 

I simply don't populate the 'taxpayer' (left side of info worksheet) email field. I put the email address for the client in the 'spouse' (right side of the info worksheet) email field. This works whether there is a spouse or not. Nothing then carries over to the signature area. I'm limited to one email, but rarely do I have a need for more than one.

So far this seems to be working for me, let me know if you try this and encounter any issues.