Steroid snitch emerges from self-exile for first Old-Timers’ Day

If it wasn’t quite the baseball equivalent of Walter White returning home from his self-imposed New Hampshire exile in the “Breaking Bad” finale, Jason Grimsley nevertheless stood out as an atypical Old Timer Sunday afternoon at Yankee Stadium. A key contributor to the champion 1999 and 2000 Yankees, the right-handed reliever Grimsley retired suddenly in…