violent spectators might not be the only ones to face strict disciplining after friday night 's nrl match , as nrl head 's reveal players could also face sanctions for their unacceptable behaviour on the field .
canterbury forwards james graham and david klemmer could face demerit point penalties or a temporary game ban for their arguments with a referee during the good friday showdown between south sydney and sydney .
the nrl judiciary code of procedure states that contrary conduct and detrimental conduct requirements will ` form part of the review ' .
both canterbury forwards could have these charges referred straight to the nrl judiciary .