Alright, I don't care about whether or not he can what character, but there were some really fine points in that episode. The one I love the most from that battle is the it was almost Konohamaru's omage to his predecessors. Asuma's seering ash, Hiruzen's shadow clone shuriken, Naruto's rasengan. I love that.
Also I'm making an official prediction... I think that Konohamaru might become the jinchuuriki for the four tails. It all fits, his clan has an affinity for a contract with monkeys, and now they reveal Son Goku, the sage monkey king. He also has the natural element of fire. Tell me that wouldn't be badass.