I think the board is protecting their own interests. Her defense of him was going to make things worse for them and they pushed her out.

“...In one of the emails, Mr. Maerov scolded Ms. Bloom for “fanning the flames and compounding the problem” and asked that she step away from the company. He pointed to a business deal she had previously reached to have Mr. Weinstein turn a book she had written into a television series...”