I think you're reading more into that passage than is actually there. In common language we refer to the sun moving all the time, even today. Saying that the sun rose this morning isn't an expression of belief that the sun orbits the earth.
Ever been out in the desert where it's very flat? If so, you might have commented on the flatness of the terrain. In reality, the land in question was curved, but to your eye it appeared flat so that's how you'd likely describe it. It wouldn't mean you think the earth is flat if you called a vast desert expanse flat.
The Biblical depiction of the sun standing still is the same thing, it's just describing something as it appeared to the naked eye.
But if we take the Bible literally, which is what Mr Hofland does, then we must accept that the sun revolves around the earth because that is what the Bible says. The sun stood still, the moon stood still, the day was longer.