Yes, you have it there at that last post. The arc is still the same direction, but the unsigned centre is on the opposite side of where you want, so the arc is theoretically correct in direction, but just like that last screenshot you have. Somebody told me that this problem only shows up with either G3 or G2 but can't remember which, my lathe is not here so I will have to go check more and get a screenshot, but it will look a lot like what you got there.
DaveA.