After listening to him actually talk, he doesn't seem like all that bad of a guy, but this is still such a negative way to go about things. I feel like all it's doing is making the whole thing look bad.
He and the band should have just promoted the album to the best of their own ability, instead of making demands. If the bassist was unhappy, he also should've just let their fans know that his days are/were numbered. I think it would've been better for them to not pick a specific number, but to just intensely stress the importance of the upcoming release in relation to their career.
Him saying, something along the lines of "I want to stay in the band, but I'm going to quit and then be really bummed out about it, if the album doesn't go to #1" is just silly.