You may well be correct about this. But, I'd suggest that the political conditions for him have reversed. He's no longer seeking to govern the most liberal state in the country, and is seeking to govern a country with a center-right majority. That fact, which puts him in opposition to Obama and needing conservative (or at least not liberal) support to survive in office, means that circumstances will be pushing him farther to the right.
If that's how circumstances force him to run and govern, I'll take that in a heartbeat over the guy we know is 1) committed to true leftist values, and 2) dependent upon support from the left of rhis political survival.
To paraphrase, Mitt Romney may be a b*stard, but he's at least our b*stard now.
Circumstances (i.e., the will of the people) will not have the slightest effect on Romney's direction, should he become president. He and his compatriot, Obama, do not answer to us, our wishes, or our Founding Covenants. They answer to other masters.
It's a hopeful, but naive thought, that a man like Romney possesses sufficient connection to his fellow Americans and our shared history and core values, to be swayed by our political will. He has demonstrated this throughout his political career, yet some people cling to the vain hope that they can somehow reach him.
If you're that type of 'clinger', prepare for the disappointment of a lifetime.