As for judges - people in Mass. pick their judges their way. Too bad you don't like it, but you don't get to decide for them. As far as answering to the voters, I'm sure it works much the same way it works in the several other states and the Federal gov't - the elected official who appoints them gets to answer for them.
The people of Mass have to wait two years to override a rogue court. There was nothing in their Constitution about gay marriage being a right up until now. Their Supreme Court created out of whole cloth a right that wasn't there. And the four who made the decision can be removed through a Bill Of Address as I understand it. We cannot have a safe Union if judges follow the fads of the moment instead of adhering to the time settled principles of constitutional reasoning.