Steroids Indirectly cause the tear.
how? they don't weaken muscle fibers or anything like that.
the guy would have done the same thing to himself natural or not.
the way he trains is the way he trains, the resistance of his muscle fibres
to movement and stretching is the same.
if you mean by him being so jacked on Anabolics that he thought he could lift more than he usually does, and then injured himself. then you might have a point.