I think the point of the thread was to come up with an honest solution, not "a kid the situation completely". The band has Ben together for years, the guy is, at the very least, owed some honesty.
Nothing pisses someone off lik being lied to.
While I too like a straight forward approach if I were the person being fired, sometimes the weasel way keeps friendships in tact, and people from getting their feelings hurt, which can have a domino effect to the rest of the day to day life.
Ie - if the person fired gets very upset and takes that frustration out on their family, or if they are losing sleep over it and it is affecting their performance at work, etc etc.
And while the band has been together for 5 years, it doesn’t sound like much of an organized band. Maybe the breakup and reorg is just what the band needs. Maybe another member decides to not rejoin, and they pick up 4 new members including keys, and sax, and are able to perform at a level far above where the previous band was at. (I say this because a similar thing happened in my band - except in that case the BL rage fired the drummer without consulting anyone else, then I quit and formed a new band with the drummer and we ended up picking up 4 more people and hiring a horn section for some shows for a total of 9 people on stage, and we were all going in the same musical direction.)