Earlier this week, Leslie Miley, Twitter’s only black manager in the engineering department, quit because of how badly the company is managing its attempts at diverse hiring. In a blog post explaining his decision, Miley included a damaging quote from the company’s Senior VP of Engineering. Now the VP is saying he’s sorry.

Leslie Miley was “the only African-American in [engineering] leadership” at Twitter, a company that employs thousands, and owes much of its success to adoption by non-white users. Then he quit, as he explains in a new blog post, because the company is absolutely brain-dead on race.