Jack Flaherty, who had looked out of synch for the most part, lasted only three innings in each of his first two starts for the Cardinals after coming off the 60-day injured list. He made it only through two innings on Sunday at Busch Stadium and surely seems headed back to the IL. . Flaherty, after throwing 49 pitches and having to pitch around two errors, one by himself, came out of the matchup with the Chicago Cubs with right shoulder tightness after hurling two scoreless innings, striking out two and walking two but throwing no fastball harder than 93 mph. It appeared the Cardinals wouldn’…