PHILADELPHIA — Bryce Harper returned to the Phillies clubhouse Tuesday and channeled his inner Terminator. “I’ll be back,” he said. All that was missing were the Gargoyle wraparound sunglasses. When, exactly, will Harper be back in the lineup? Well, that’s another matter. Not wanting to overpromise and underdeliver, the reigning National League MVP declined several times to put a timetable on his recovery from a fractured left thumb, although a source familiar with Harper’s thinking said last week that he’s aiming to be back before Sept. 1, possibly even by the middle of August. Is that realis…
