Davis' always had a flare for the theatrics
http://mlb.mlb.com/mlb/gameday/index.jsp?gid=2014_06_30_oakmlb_detmlb_1&mode=video&content_id=34184387&tcid=vpp_copy_34184387
I think it's more to do with the fact that he now owns a BoosterJuice, you have to imagine some of his baseball focus will be taken away, even if he has peons running the store.
Article is pretty pointless if he's been playing injured (as Moogy pointed out), not sure if this was only announced recently and that's why it's not mentioned in the article, otherwise author is a moron.