Bane was in a poor mood when he got back to the pack and everyone was aware of it. The exact reason why they were unsure of, they just knew that it would be in their best interest to avoid their alpha was much as possible until he had cooled down.
The only who dared to approach him was Crescent and that was only because he knew that his brother would never go after him. Thus, it was safe for him to invade the other's space and find out what exactly was going on with him.
The bottom line that he discovered was that he was pissed at Divo. Not just because the other decided to make his presence known and explain that there were the two of them, but also because of the way that he had handled everything. Their mate had become afraid of them now because she thought they were crazy or dangerous.