Suspicious sector jump

I am not sure this is where I should post this but here goes. On Wrath 18 today, a player made what I believe is a suspicious sector move. His main was in the SE around 569:540 just south of the E border. He had one other base in the same area and all the rest were scattered, some in other sectors. He sectored to the E and main landed 569:502 which is slightly north of the SE border. All his other bases landed around that. It is my understanding that when you sector, you land 20 spaces further from the center and usually somewhere near the ctr of the sector. In this case he only moved close to 40 spaces north. I don't see how he could have landed where he did, based on my understanding.