Possible is possible. It might be possible to get a ruling out of this that favors Hobby Lobby if the argument is (or has been) made that a religious employer courts a religious clientele. The reaction to Chik-Fil-A is a case in point. They’re trying to balance God against Satan which is ridiculous on its face.
The situation of a packable court doesn’t exist here as it existed in Roosevelt’s day. Not while the GOP holds the House and won’t expand the size of the court for Obama to pack it.
You mistakenly think that the GOP is different then the Democrats; given how they do not vigorously pursue any of their platform planks (abortion is likely the best example, but 2nd Amendment and fiscal responsibility deserve mention too) and put up guys who are politically the same as Democrats for high office (see McCain and Romney) and their lackluster efforts on Fast and Furious prosecution or repeal of the Affordable Care Act (the first obviously and easily provably treason and State-sponsored Terrorism, the latter obviously contraconstitutional) makes them seem more and more just the same... and if they are the same as the Democrats, then they will do what the Democrats would do, like pack the court if they could.