I’m not making any conjecture on the reason behind this, but the timing seems to be very strange.
Bernie Sanders’ campaign parted ways with its California state director Michael Ceraso on Wednesday morning, 27 days before the primary in the state that Sanders has repeatedly said is crucial to his effort to capture the Democratic nomination.
The surprise move came after a period when Ceraso advocated for a California strategy that involved more investment on field and digital organizing than on television advertising — a staple of Sanders’ campaign elsewhere so far — he told POLITICO
http://www.politico.com/story/2016/05/bernie-sanders-california-michael-ceraso-223077?cmpid=sf