For clans, I have stopped caring about the rule. I just use 10 diff clans, beat a clan 3x then switch to a another clan beat em 3x again and so forth.
All you did was encourage multiclanning.
Don/Olaf, what was the purpose of this rule? Like what was its main objective? It doesn't prevent pushing at all, so leave that out. And it surely doesn't encourage you to play more peeps