They behaved this way due to jealousy and not because of the Ansaar. Also, the answering back is a different thing all together.If u read the whole hadith u would understand that it wasnt only the talking back but the scheming aswell.
Allah said: 'If you two (wives of the Prophet) turn in repentance to Allah your hearts are indeed so inclined (to oppose what the Prophet likes)?" (66.4) He said, "I am astonished at your question, O Ibn Abbas. They were 'Aisha and Hafsa."
This clearly states that both of the attitudes were not good and it needed reforming, i am not slandering anyone.
At the end of the day you're a laymen. You will fall into sin and slander, just stop it. They were the best of women of those days and you're out here presenting them as having bad character. Enough Wallahi.