Hadn't heard this story, but as to toddlers opening doors, running loose....years ago, a neighbor told me her two year-old son would wake up in the middle of the night and climb kitchen counters, climb on the fridge, wander all over the house. She had a tough time keeping him in bed. Don't recall that he ever got out of the house, though.
Years ago, a young couple with a two year old was moving in next door to my parents. They knocked on our door frantic because they had turned their backs for a moment and their son was gone. As we were helping them look for him, I walked into their garage. In the middle of the floor was an upright freezer with nothing around it. On top sat that child with the biggest smile on his face. To this day I have no idea how he got up there.