deleting a husband matched to the wrong sister

Why should you delete?

Sounds more that you just want to cut a connection.

How do you do that?

Edit profile, Relationships tab.

It might be wise to connect him to the correct wife first (use a ctrl-click-drag-drop action, or the Move functionality in tree view) to avoid getting stopped by a cannot split tree message, but you might have to be a Pro user.

If not a Pro user you can ask a Pro collaborator or a curator like me to cut the connection.

OK fixed it

Thanks