Along with everyone else, I agree that scientists shouldn't be punished for being wrong.

HOWEVER, it appears that the mistake brought to light existing frictions within the group, which is the driving force behind these resignations. From the article: 'Autiero ... told Nature that he did not resign because he made mistakes in the measurement. Rather, he and Ereditato ... "felt that tensions that had always existed within OPERA were becoming impossible to bridge."'