Well, first of all;
1. Anko's place is known only by Sasuke, Jûgo, Suigetsu and Orochimaru.
2. Yamato needs special treatment to get out of that wood. Or yes, just smash it in pieces and break a fortune (Hashirama).
3. They have the second Jûbi Jinchûriki and Madara against them, add that they have 5 minutes of time to fix the thing and to returning for only two people takes maybe 20. I think the firs one is already enough challenging.
4. They are in a war and are shinobi. As Obito said; People die in wars, hatred grows. You have no longer time to think about the others; only yourself.
Is this a good answer?