Non-violence is the greatest Dharma; So too is all righteous violence.
They might made Kohli and Kumble to discuss the issue and come for an understanding. Removing a person Whois sincere in his work sends wrong signals to others. Tomorrow the players may ask for the change of captain also. Are we going to hear that. Not a correct way of functioning.
Kumble is a time tested player of India. He is sincere to his core on the field and off the field. Kohli should also think about this and he should accept him as coach. I feel there is a third hand also in this which is not visible outside.