Living up here for a super long time I have seen folks with their arms folded, no eye contact, unable to really deal w the fundamentals. She was removing them from the fairgrounds because "she said" which the last time I checked was not a reason.
To blame the music coordinator is also a dodge. Own the decision. if you pull the plug. How bout buying the guys a meal to mend the fence and say sorry there were folks raising a stink and felt pressure to comply w the audience request .
 I'm not saying I have all the answers here but there are ways to save face for both parties , or a least try.