The GOP candidates must be jumping for joy right now. The last thing they wanted was for victory. Can you imagine the turmoil in their poor red states as people lost coverage? Can you imagine them actually having to put forth specific solutions? This gives them a "bad guy" to continue to rail against.
Roberts has surprised me multiple times. The 2016 GOP presidential candidate pool looks like a funeral after a wealthy relative is dead. Out of the woodworks comes hundreds of family-members, hanger-ons, and scoundrels looking to pick over the corpse of our country's middle-class. I feel better for the people still being covered (hey ... look at me being self-interested in my own healthcare) rather than give a wit of anything for GOP candidates. pushes both of my pink poker chips onto the center of the table I'm all in for Bernie.
The commentary I heard said striking down the law at this point had the potential to destroy the insurance industry or at least wreak havoc with an already precarious system. The people who filed this suit may not have wanted to win anymore but that's assuming they aren't fundamentally shitty humans.