I've been a big supporter of this arc up so far but even I didn't care for this episode. Same reasons as everyone else. Continued use of Rasengan, and poor fight animation.
Honestly, I wish they would do it like this: It takes 3 hands for Naruto to do a "proper" Rasengan. But even Naruto's imperfect Rasengans tear giant hole in trees. I wouldn't mind so much if Naruto saved the "proper" rasengan for important times, but threw out the imperfect one often, if for no other reason than continued practice. I mean, I don't expect that Naruto is going to be satisfied with only being good enough with Rasengan that he has to summon up clone every time he wants to do it. At some point he's going to want to train it to the point where he can do it one handed like Jirayai.
On the issue of the way the ninjas run, I wish people would stop complaining about this. While it may look stupid, it makes perfect sense when you think about it. It's very simple, running with your arms swept back is most likely alot more aerodynamic that the normal way, especially at the supernatural speeds at which the ninjas travel. The reason most people swing their arms is an issue of balance. Try running like they do, you will find that its very precarious with your balance without your swinging arms to counter your forward leg movements, one mistep and you're gonna be face first on the ground. Now picture that your a ninja with a fantastically trained sense of balance. If a ninja has enough balance to run without swinging his arms, then of course he would sweep his arms back to get the extra speed.
*nods sagely*