I am well aware of what the term explosive means, but I see an explosive movement as a move than cannot be performed slowly such as cleans/snatches, other moves can be made explosive like in your example but they can be done slowly as well. I guess it's just a difference of opinion on explosive movements vs exploding during a move. If that makes sense. As for the cage/rack, I use it almost daily and I am very familiar with bands and chains and the hook system.
Yev, I've thought of doing it that way as well but I didn't want the medium weight week to affect heavy singles week.
Either way it's a solid set up, I think it's a great way to periodize your training. Gives the body a break without getting into the 12-16 week block periodization systems where you are planning so far ahead not necessarily knowing how your body will respond from week 1 to week 12.