Russell brother is entitled to his opinion, especially one that is shared by a lot of people, but as a family member he needs to be aware anything he tweets has an effect on his brother (ask Michael Vick about that).
Here is what he had to say about Scott Brooks courtesy of Alex Kennedy.
He deleted the tweet, but it was too late. The Thunder have enough to worry about dealing with the Grizzlies, they don’t need family members complicating things because they can’t control their emotions on social media.