If you examine the fact that Governors can essentially opt out of the expansion and the feds can't do much about it. Congress now has a TAX to defeat, (by a simple majority not a 60% super majority) and this is a Presidential election year.
Roberts has attempted a return to Federalism. (though it's thru the backdoor approach)
I was really upset when I first heard his ruling, but after cooling down and reflecting I still think that he DID give the People a way out of Obamacare... If we the people just stand up against it and vote a conservative majority into the Senate, keep hold of the House and boot Obama to the curb.
Bye Bye to this Obamanation of a law.