people fail to realize that Tsunade made a hasty decision when she woke up, she doesn't even know who sasuke is lols... Why is she gonna send 5 kids straight into orochimaru?? She is new(at her job) so there are things she needs to know first, she's been too busy with all that crap on her desk to make a rational decision in the morning..Shizune will go back to Leaf to obviously tell her that 2 jounins died by the Sound nin that Tsunade sent Shikamaru & co. after....
They will have probably caught up by now..Every time they faded away from choji and neji, ANBU probably arrived..Plus they have medical assistance now on teams..Something she didn't send with Shikamaru and them.
It is obvious if you pay attention that Tsunade was making a weird decision and didn't even know much details..She of all people should know Orochimaru and his people are crazy..
Who knows, maybe they'll take out Sound village =D
They messed around enough