As North, after two passes, I decided to open 2♦, which we play as weak, thinking to preempt the opponents out of a possible spade fit. Call it a psych, if you wish--I consider it a judgment bid. I was asked to explain and I said "preemptive." After two more passes, West reopened with a double, which ended the auction. East led the ♠Q; I won and led a ♥ and eventually took 10 tricks.
Alleging misinformation, East summoned the ACBL director, who agreed with him. The director stated, "First of all you should have opened 1♦." I said I can open however I please. The director agreed with this, adding "but you can't misinform the opponents." I said I told them what our agreement was, in accordance with what I understand to be the requirements. I asked what I should have explained instead, but got no response. The director adjusted the board to average- for us, average+ for the opponents.
Do you agree with the ruling? If so, what should I have responded to the opponents' query?

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