The film as a piece of work, forget adaptation, is just that flawed.
I don't read questions about plot holes that bad in MIB3, Avengers or even Snow White for crying out loud. Prometheus comes close but TASM has editing issues that from what we know of footage heard in trailers and other places might have tightened this up.
The Connors family was cast, is that correct? Did they ever shoot any footage? I imagine the time to see them might have been when Peter stops by the house. They make a point to show Curt wearing a wedding ring after all.