For the most part people work out as hard as they are going to. They either put the effort into volume or intensity. Rare is the individual that can maintain psychotic intensity across a large volume. "Rare" and likely often injured, even if they are on the sauce.
If a normal or normal-enhanced person backs off on volume, they are likely going to up the intensity and vice versa. The only way that an experienced lifter would back off both is if he is going to a "light day" ("deload" in the current zeitgeist). Since you can just as likely "annihilate" with intensity as with volume, most folks that are used to annihilation will just annihilate using a different method.
Then there is the Heaths of the world that just pretend train and let the hyper-response to the gear do all the work.