Re: Acceptable reasons for you to get up from the drums mid song?
Have not done that yet on the drums, but I used to do alot of live mixing and one night almost ended when I pulled the faders down and turned off the board because I was heavily insulted by the band leader. He screamed things into the mic that I don't want to repeat here.
Unfortunately I have zero tolerance for such behavior.
It took quite some time for him to apologize, so more than half of the audience had left already. Most of the rest were booing, too.
I have never experienced something like that again.