Today when I joined on my character Loyality, I went in their clan to check the score of their clan. I don't really care what they say in their clan channel but I remember that Atason__ said " I leave my clan, you recruit me an we clanwar ". Was about to screenshot it but actually they went up, I invited ^5J^6une^1^8^0^8 to the clan and we dropped them. When I checked the fgunz clan war page I saw that :
I'm pretty sure that they were swapping to get better clan score.