Everon is right... if Kimimaro can move his body by willpower alone (he was near dead, remember?) why can't Lee do the same? Lee is the master of willpower and hard-work, and no one can deny that.

I hope the other reinforcements we are all waiting for is not Gaara. Gaara has nothing to do here. He hated his father, therefore doesn't really have a reason to kill Orochimaru. Kishimoto himself has said it already; Gaara was created to prove that while he had family and had been "loved" at some point, he couldn't trust anyone and turned out worse than Naruto, who had no one until later on his life.

Besides, this is all happening at least a month or even two after the chuunin exam. Gaara must be at the Wind Country already, and he must be busy trying to redeem himself... since it seems Naruto showed him the right path to follow.

And I keep myself firm on the fan-japanese... no need for it.