I don't think Swihart would want that extra option year and would much prefer to be traded to pursue a Major League opportunity elsewhere over spending more time in Pawtucket. He didn't declare himself for the draft to become a minor leaguer. And his demand to be traded does show some evidence that he is not married to the Red Sox organization and wants to prove himself elsewhere if that is what it takes, especially since he knows he cannot be demoted regardless of where he ends up. (Remember, he asked for a trade and not to be released. If he asked to be released, it might be an indication he was open to minor league deals if all else fails.)
I'm sure he'd like to take over the catching duties in Boston. But I think he'd probably also prefer the chance to take them over in, say, Washington or Chicago, than in Pawtucket.