Fired a guitarist for missing a gig and then a studio session. He threatened legal action if we used his songs live or used them to promote ourselves.
I ended up quitting said band 18 months later once I realised that the drive from the others was not there and they had no desire to gig. They booked a studio session a month later and recorded and released a song that I wrote... didn't threaten them with legal action, did I?!
The whole band split another month after that.