I'm neutral on Guerrero...I think you have to suspect the trainer, but since his method doesn't involve bulking up and being all muscular, I give him the benefit of the doubt.
Edelman, being the workout warrior he is, and refusing to stop lifting weights....he seems like the type that would get steroids on his own if he wanted them.
Not saying either case is true...but I think, I probably give Guererro a little more credibility than I would most other trainers, because from waht little I know about TB12, seems like steroids might not be a part of it.
I would not be at all shocked if they were, mind you, but I'm not sure how much PED's would help with "pliability".