Didn't the California Supreme Court uphold Prop. 8 and a Federal judge with the approval of the Ninth Circus overturn it?
yes, you have it about right.
Walker ruling was appealed to appeal panel.
Today, the decision of that appeal panel was set aside because the plaintiffs, appealing the Walker decision, had no standing.
Local California officials (county, town) need to stand up for traditional marriage and either get sued or they themselves can look for an opportunity to sue. It would be more interesting if our side were more litigious.