They've already shown that they're willing to rewrite law; consider the 2005 Kelo v. New London case.
In this instance the state argued that the "projections" of greater taxation revenue qualified for the "public use" requirement of the exercise of eminent domain despite that the public would not, in general, by using the seized property.
Another instance is Wickard v. Filburn, a root of much of the evil in our justice system, where the court decided that the interstate commerce clause applied to intrastate commerce because it impacted the overall market. (And that reasoning was again used in Raich, which expanded it to things never put on the market because it was illegal to sell.)
Well, you could have carried that one step further -- the reason that the Individual Mandate will be declared unconstitutional in two days, is precisely because the majority knows that to not do so would be to grant the Commerce Clause unlimited power, which it most decidedly was not meant to do.
This is the reason Bobo is so chuffed -- now we will have a blue-line limit on the Commerce Clause, and thusly a limit on everything the Left had hoped to ram through that loophole.