Thumbs up/down: What happened to the defense?

(Photo: Matt_Kryger/The_Star)PITTSBURGH – Here is the best and worst of the Colts’ 45-10 loss to the Pittsburgh Steelers on Sunday night:

THUMBS UP

>> RB Frank Gore: This wasn’t exactly the plan, but nothing has gone according to script in this crazy Colts season. Gore now has 30 receptions in 2015, his most since 2010. He never figured to factor prominently in the passing game because the Colts, everyone figured, were going to have a monster receiving corps. Remember that? Well, on Sunday, when the Colts couldn’t sustain any offense and their receivers were relative nonfactors, Gore gave quarterback Matt Hasselbeck a reliable option, catching three passes for a team-high 49 yards. Yes, the…