Colts general manager Chris Ballard arrived for a news conference as scheduled Wednesday — just not the one he expected. Instead of introducing Josh McDaniels as the team’s head coach, Ballard stood in front of reporters trying to explain why New England’s longtime offensive coordinator reneged on a deal he accepted. But if Ballard’s disgust about losing his top choice wasn’t clear from the occasional glare or the strong pitch in his voice, he left no doubt with one parting shot. “The rivalry is back on,” he said before leaving. Conducting a coaching search in February isn’t what Ballard or Indy envisioned when Chuck Pagano was fired just hours after Indy completed a 4-12 season Dec.