Were the builders of those tunnels slaves or the temple priests? Unless they were slaves, I would suspect they wouldn't do 90 degree turns/jogs as that would take longer and require a bunch more effort and engineering to get them to be equal on both sides as in the first map you posted.

It would be more likely that they would have gone at a 45 degree angle to "cut" the corner and get around the center room. Just a thought. Back in my youth I used to see these types of maps in the old D&D modules and began to question their construction over the years. Unfortunately there wasn't anyone to ask back then. These days we have wonderful forums like these where I get to ask all those sorts of probing questions.