Winstrol and B 12 arent going to provide the same benefits. Not sure where the thought process was with the trainer. Winstrol isnt a monster steriod in which your strength and size will increase in a large manner. Winstrol will put about 5 pounds of lean muscle on you with some increase in strength. The risk vs. the reward factor. If he isnt caught then he has provided himself with an avenue to expand his offensive game. Now that he has been caught the muscle mass that was gained will still be there after the suspension. Muscles have memory, once established it will be there until much later in life.