Re: How do you tell your frontman that we dont want him anymore?
How would things be different if he managed the band? You say he doesn't have the professionalism to contribute musically, yet you feel he can lead your band forward as a manager. He made bad decisions as a member of the band. You should be prepared because he may make bad decisions as a manager also.
Based on what you told us, it sounds like you all want him out. I do understand you have a friendship and that makes things difficult. Good luck.