Even though Skylar said the Car wash is turning a profit, I don't think Walt could give up his Heisenberg bad self!
Walt has no choice because Walter died in that crawlspace. Heisenberg is the only personality Walt has left. Add to that the self-validation of Heisenberg's victory, and the shift is cemented, and there's no new personality on the horizon to push Heisenberg out of Walt's ego.