The NFL is clearing up how officials should handle scenarios like the one that stung the Cowboys in their divisional round playoff loss to the Green Bay Packers in January.

Instead of penalizing teams with a 15-yard unsportsmanlike conduct penalty, officials can warn teams for their first offense, thanks to a review by the competition committee. Dallas didn't have the luxury when receiver Brice Butler went into the Cowboys huddle before a play and was called off the field before the ensuing snap. The 15-yard penalty negated what had been a 22-yard completion to receiver Terrance Williams for a first down deep in Packers territory. It ended up costing Dallas 37 yards of field position and led to a punt on the drive.

The intent of the rule is to prevent teams from using simulated substitutions to confuse an opponent.

"We did discuss it and obviously, that's a penalty that you don't see very frequently," NFL senior vice president of officiating Dean Blandino said on a conference call Thursday. "We looked at some of the language in the book and we're going to give our officials just more latitude to warn a team if they feel like this is a potential issue and then penalize after a warning. There's language in the book that allows for a change in a coaching decision where a player or a group of players may come onto the field and then there's a change in the decision and then they go off the field without participating in a play. We want to maintain a team's ability to do that, so we did discuss it and look at the language and we feel comfortable with the referee giving a warning if he feels a team is trying to manipulate the situation allowing the defense to matchup in that situation and only penalizing if there is a subsequent act after a warning."

A former TCU football player was arrested after a car he was riding in crashed into an Uptown Dallas bar and injured five people.

Trevone Boykin faces charges on suspicion of possession of marijuana less than 2 ounces and public intoxication, according to Dallas County Jail records.