Sorry folks, but I found a quote of his interesting.  Paraphrased, he said he couldn't talk to Peterson for 2 years because he wanted everything done his way.

I know Peterson preached throwing everything low.  Warthen has stressed pitchers throwing high.  I think he meant mixing it up.

Anyway, it is like Duncan and Anthony Reyes.  You get these pitching coaches anointed as god and sometimes they just don't mesh with a pitcher.  Maybe Reyes is just a little stubborn, but I had the feeling that Peterson was part of the problem with Pelfrey's development.