According to the band’s official website, Baksh left on good terms and will be working with a new group, Brown Brigade. The website reported, "He was sick of this whole life and would have more fun playing in his own classic metal band, so we respect that. There’s no hard feelings whatsoever. The fact is Dave lost interest a long time ago. Not to take any credit away from him, but he really didn’t have anything to do with this band creatively for a long time."
Sum 41 will now begin their search for a replacement for Baksh.
I wrote all those riffs and played most of them on the albums. So from a creative stand point nothing is going to change with Sum 41."