Not much action, but still a great episode. I think the Gaara Arc was as low as it could have gotten so every episode so far after has been really good and entertaining.

Sakura isn't an idiot, she just really cares. She just wants to help Naruto as much as she can.

As for the sealing Yamato used, that must have been what the 1st had. The reason that the 1st could control bijuus was probably that skill. It looks like it was somehow extracting the chakra from Naruto and weakening the Kyuubi or something. I'm not sure if the spiked barrier had anything to do with it, but it seems to be a last resort sort of thing if Yamato couldn't save Naruto.