I'd say there was just one hole left in the cheese & all concerned were fortunate that the pilots did everything necessary to ensure, on this occasion, it didn't line up.
The pilots are a potential hole in the cheese!
Or are you one of those people who thinks that pilots are little short of superhuman and whose role in life is to sort out other peoples' screw ups?
If you are going to comment using Jim Reason's model please, at the very least, understand what the holes mean!