i think a lot of strength loss after a cycle is over is due the person changing their diet. When we reduce our calories to lose bodyfat we pay the price in the gym. That means timing your higher carb meals becomes more important, and I think a lot people over look that. If you don't have the energy resources in your body, you simply won't be able to push as much weight. Go low carbs for a few days and see what happens in the gym. You will fatigue faster obviously.
referencing original post, I have to agree. I feel better when I'm "on". I think it is largely due (for me anyway) to seeing changes in my body and being able to push more weight in the gym.