Did Easy Company's NCOs have any options beyond "follow Sobel into combat" that fell short of "resign en masse"?
In other hierarchal institutions, if you have a problem with your immediate supervisor, you're still supposed to try to resolve it with them first, but if you have demonstrated a reasonable effort to do so and failed it's considered acceptable to consult your immediate supervisor's immediate supervisor.
Who, in Sobel's case, is regiment commander Col. Sink.
Was it an option during training for the NCOs to approach his office, ask permission to speak, to raise one's concerns about Sobel being lost during training, and to ask Sobel if he'd willing to consider changing roles before combat commences? Perhaps Sobel wouldn't take it well, but I would think that'd at least that'd stop short of mutiny.
Was it an option, if that failed, to turn to Col. Sink and explain to him the situation with Sobel? Not sure if it'd still amount to insubordination for going over Sobel's head but it certainly sounds less extreme a form of it than quitting en masse.