Actually, in hindsight, I agree with many of you who said I should've stopped after the "I quit".
He did respond with expletives and revisionist history -
I also received responses from many fellow musicians who used to play with him and some who still do...
Here's a couple...
"I hear ya Paul. If I hear of anything I will drop your name for sure. You are a great player and person. You don't deserve his ****." - from a drummer (imagine that!)
"I always knew you were a well meaning and nice guy. However, after reading your "I Quit" email", in my eyes you have now been elevated to hero status. Please contact me in the future if there is any opportunity for us to peacefully coexist in a professional work environment."
However - probably just should've given my two weeks and left.
Thanks, all, for your input.
And yes, Joe Nerve, he did talk sh*t about you. Sorry.