Actually here is an article about the players themselves wanting more of hardline on that type of stuff even up to making a three strike type of rule or something. Now I think the main reason some players are suggesting it is that they realize this is bad
pr for the league and themselves which could cost them money in the long run, and not because they truly care about ending stupid behavior. But if thats a by product of any potential change the league might make than I'm ok with it. Anyway here's the article from ESPn. com
ESPN.com - NFL - NFL players seek hard line on off-field misbehavior