This news was mentioned on another music board. It seems it’s a bit more complicated than “Lindsay was fired”. The rest of the band wanted to get organised and go on tour; Lindsay did not want to or wasn’t ready. That really only left them the option of touring without him, and that meant getting one or more replacements on board.
Whether you want to call that Lindsay quitting, Lindsay being fired, o just a parting of the ways, is largely a matter of semantics. Of course the word “fired” is a nice emotive word that gets readers’ blood up and sells news copy.
As for Neil Finn - I have nothing but admiration for him as a musician, but I can’t imagine him being a good fit with FM.