what could kakashi have done??? nothing, that battle was way beyond his skill level, i knw hiruzen he should have let kakashi help but thats not the only ridiculous stamement made in that episode...shikaku said that someone from the age group below minato should be hokage...which basically means kakashi and guy's group, which all were less than 13, how the **** can a 13 year old kid run a village...but anyway that was my way of showing that u shouldnt take somethings thats sounds ridiculous serious...
either kakashi would have face obito or the kyuubi either way he would have been killed rather easily so what exactly could kakashi have done..