This is an unfortunate development for the band, but I really don't think they care about anything other than Billie Joe getting the help he needs so he can get this behind him.
Separate from that, I think his meltdown was entirely justified. He had twenty minutes cut from his set--he got angry and that's okay. Why do rock stars have to be polite and understanding?
This is something that came from another place entirely, and whether that was from the stress of writing and recording three brand new albums at once or his personal life, that's nobody's business.