I was listening a CD of The Jesus Lizard's last show in Sweden and in the interview after the show Yow mentioned that he wasn't that happy with the band after Mac left... Anyone know why Mac did leave?

I believe that he wanted to spend more time with his family or something.

i recall from some interview his departure being due to familial obligations.

His mom didn't like him playing in a band with a guy who got his dick out on stage every night.