Whether 0bamacare can be repealed depends on a lot of things that are not known yet. If 0bama were to veto a repeal, it takes 2/3s of both houses to override. But I have to believe that Senators Pryor, Nelson, Landrieu, Webb and other Dems from red states will beg 0bama not to veto it. And considering there may be any number of house investigations into impeachable offenses, he may not have the will to do it.
Who knows, the Dems may demand 0bama resign so Hillary can save their butts.
If by some wild chance Boxer, Murray, Gillibrand and Blumenthal are swept out, the Dems will be in true panic. No Dem senator will be safe in 2012.
You make the false assumption that this Administration will follow the law. Think about the blank check that the Administration has given to Fannie Mae. The House never approved that.