That’s my favorite summation so far on Chief Justice Roberts not doing what was expected of him (from here):

Centrist yuppies can barely handle themselves now, after seeing the Great Man himself, Chief Justice John Roberts, save Obamacare from judicial overreach in a statesmanlike move to protect his Court’s honor. It is stunning how much credit a Republican can get for not doing something 100% insane, just once, over the course of a lifetime.

As I noted here, all Roberts was doing was trying to protect his own legacy. Way too late for that, Big Guy.