ATLANTA — Al Horford had 26 points and 16 rebounds as the Atlanta Hawks turned things around dramatically in their playoff series against Indiana, blowing out the Pacers 90-69 in Game 3 Saturday night. Playing with much more urgency than they did in two double-digit losses at Indianapolis, the Hawks raced to a 54-30 halftime lead and narrowed the best-of-seven series to 2-1. Game 4 is Monday night in Atlanta, where the Hawks have won 12 straight over the Pacers dating to 2006.