I doubt that this is a case of multis.
Game Log wrote:2008-05-27 14:23:06 - delboy18 attacked Venezuela from Brazil and conquered it from Quase
2008-05-27 14:23:08 - buly 19 attacked Great Britain from Western Europe and conquered it from Quase
2008-05-27 14:23:09 - delboy18 attacked Peru from Venezuela and conquered it from Quase
2008-05-27 14:23:13 - delboy18 attacked Argentina from Peru and conquered it from Quase
2008-05-27 14:23:13 - delboy18 eliminated Quase from the game
Can you say what the army counts were on all the territories that buly could have attacked? Also, how many armies did Quase have on the board when buly made his attack? Could buly have attacked SA after he attacked Quase in Europe?
Given that they have only played 11 games together I think that you would also be hard pressed to find enough evidence to have a block put into place.