I didn't hear anything like this at the BC/Lex scrimmage, but I'll be sure to point it out when I do.
It really is a poor reflection on these schools, which is an absolute shame considering the quality soccer and effort their official representatives are displaying.
Officials should not have to stop the game to tell a coach to tell his supporters to show some class. The onus is on the supporters themselves - tell your annoying parent/JV bench warmer to put a sock in it and enjoy the game!