Well, staff does have it in the books that taking dragons from rescues and the like repeatedly as fodder is a punishable offense for poor faith trading even though the dragon left your account. The "not on your account, not your dragon" rule has wiggle room. I don't know if they'd wiggle on this, but there is written in the rules one area of wiggle.

In this case, everyone sucks, and this dude needs to shut up though.