修羅場 【しゅらば】 fighting scene; scene of carnage (bloodshed) 修羅場る 【しゅらばる】 to (have a situation) descend to mayhem
I presume the term has some fighting-over-love (with possible actual bloodshed) connotations to it. It showed up in the 2channel live threads for episode 7, when Sayaka was spying on Hitomi and Kyousuke.
*argue* Sakura-san's joining in too!! *bicker* *bicker* What do you think Nakazawa!!A "yuri fight"!?It doesn't matter either way.A yuri fight!Things are really getting complicated!Can't we just have a normal fight? Aah!! Sayakaaaa!!