CONCORD, N.C. - Greg Biffle's girlfriend faces a reprimand from NASCAR about her pit-road confrontation with Kurt Busch's fiance after the two drivers wrecked at Texas Motor Speedway. Busch hit the back of Biffle's car early in Sunday's race, causing an accident that ended Biffle's day. Biffle, the defending race winner, had led 49 of the first 82 laps before the crash and wound up 42nd. Moments after the wreck, TV cameras caught girlfriend Nicole Lunders slamming a water bottle on Biffle's pit box. She then marched down pit road and climbed halfway up Busch's box and had a heated...