I'm not sure why the Twins said Brooks Lee is their third baseman after sending Royce Lewis down. They didn't have to make any statement, and if was pressed they could say they feel most comfortable with Lee at third over the other current candidates on the roster.
What makes even less sense is Lewis is playing third for St Paul. If they plan on moving Lewis to a different position what are they waiting for? He probably makes more sense at first or one of the corner outfield spots. Or simply make him.the DH.
I would expect Lewis is fighting back against a position change and most likely trying to force a trade. They won't trade him when he has no value.