Here's my take on it with a bit more detail.
Any walleyes stuffed in your freezer are within your possession. I wouldn't want to try and explain to a CO that 2 are hers and 2 are yours
Now, if you were divorced and your wife lived somewhere else, then her possession limit would be 4 in this case. Yours remains at 2 because of your conservation licence.
You can cut up your license all you want, but that doesn't make it disappear out of the MNR database when they pull up your records, Now, if you didn't renew after it expired and weren't legally licensed then the both of you could possess 4 walleye in the freezer if they were gifted to you.
Great topic, BTW. Sure beats another political thread