Can't seem to access it now, but Steve Albini paid a nice tribute to him over on his message board, www.electrical.com
This is what he wrote.
Steve Albini said:I only worked with Mark for a couple of weeks, but he was as open, sincere and unaffected a person as I've ever encountered. He was completely unguarded and enthusiastic about the things he loved, and he gave the musicians he worked with freedom to be creative and excel. Prior to seeing him at work I'd never given his music much thought, but during those sessions he impressed me tremendously and I was really looking forward to seeing him again and finishing the record.
I have no idea what brought Mark to this decision, and I'm sure there's nothing I can say that will enlighten anybody about his death. I just wanted to say I thought he was a good dude and his art was genuine. I don't think there's a lot more you can ever ask of anybody.