Let me try to spell out for you this very simple issue:
1. Appellate regional (circuit) federal courts have ruled that state bans of SSM is unconstitutional.
2. Appeals were filed with the SCOTUS.
3. The SCOTUS refused to take up the matter.
4. This means that the regional federal court decisions STAND.
5. Therefore ALL states under the jurisdiction of those circuit courts CAN NOT enforce bans, as soon as local federal courts there are consulted about it (those courts won't be able to rule any other way, legally).
6. This decision becomes biding as soon as in each state, someone petitions the local federal court challenging the ban, and the federal judge rules that there is merit in the petition and the state must obey the regional (circuit) court ruling.
7. This has happened yesterday in North Carolina at about 5:30 PM, a state that has a constitution banning SSM. By 5:45 PM, the first same-sex marriage happened in North Carolina (the Deputy Sheriff of Wake County and his partner) followed by many others. Clerks offices extended working hours to 9PM to attend all the gay couples interested in getting a marriage license.
8. As soon as a federal judge rules the same way in South Carolina (and again, there will be no leeway for ruling any other way since the circuit courts are higher than local federal courts), whatever the South Carolina Supreme Court says in the matter becomes irrelevant. That's all that the South Carolina Supreme Court did: "until a federal judge rules in the matter" which has happened already in North Carolina but hasn't yet in South Carolina (it will probably happen as soon as Monday), then they'll have to obey it just like North Carolina did.
How in the hell do you guys construct that as a victory for the anti-SSM camp? It is OBVIOUSLY a defeat, as evidenced by gays now getting married in North Carolina which up to yesterday at 5:29 PM could not happen due to the state constitution. The SCOTUS refusing to take it up made it possible, and this will happen in all 30 states under the jurisdiction of the circuit courts that have ruled that the ban in any of their states is unconstitutional.