Only the pitcher and catcher have defined spots on the diamond. As a precursor to the shift, Baltimore used to move an outfielder to the infield. The only requirement of position players is that they have to be on fair grounds (except the catcher).
This is as bad as those hockey nuts in Toronto who keep talking about 4th line left wingers and winning the cup. We will not win because of some dreck pickup.
Maybe not. Maybe the idea is that he would go to AAA just to stretch it out and come back. Kind of like a rehab. Personally I think it's not a bad idea to work him in the way Hentgen was.