It wasn't illegal substances... he was working out with a musclehead by the name of Mike "Zipper" Sable. IMO, boxers should avoid lifting weights at all costs if possible. This guy was all about weight lifting, thus reducing JT's flexibility.
Toney is no longer working with this guy so hopefully injuries will subside.
Trinidad wouldn't retire if he lost to Winky anyway. Winky would practically beg Tito to ask him for a rematch because that's where the money would be. After getting ducked his whole career, Winky would duck Bernard for the money. No doubt.