I think you're being generous. A circle requires no interpretation. It is flat. So it is the OPPOSITE of what CJ is saying. What the Bible actually SAYS, is that the Earth is flat. The reinterpretation makes it into a sphere. It is NOT what is ACTUALLY says. This is specially the case since many people thought the Earth was a flat circle. They could see that all other objects in the sky are circular.
He is being generous but you are being equally ungenerous. It is unarguable that people taught that the earth is a flat circle.
But Howards is saying that the Bible could have been trying to say it's a sphere regardless of how people took it. It's certainly possible imo.
So...maybe...but no one will every really know.