I have also found out that the best way to deal with these rule lawyers is to keep in your RP and remain totally silent towards their OORP accusations. Just make sure you know what the rules are.
[\JG/]BugsBunny
Information, the first principle of warfare, must form the foundation of all your efforts. Know, of course, thine enemy. But in knowing him do not forget above all to know thyself. The commander who embraces this totality of battle shall win even with inferior force.