Yes, but if I recall correctly, Sackett's accounts contradict the idea that Roddenberry got in trouble with the SEG over the use of fans.
My understanding is that he didn't get into trouble, but the SEG simply moved to close the loophole he'd found in their regulations. The point was the SEG really couldn't fill the required number of pre-made costumes with the required number of correct-height/weight professional extras. Some of the fans used were already SEG members anyway.
GR was great at finding loopholes and ways around the rules. He was the first Trek Troll.
