naw man, pyramid is going high rep lower wieght, up to higher wieght lower reps. the only time i've ever goin up then back down is when i'm running the rack for bi's or something, doing crazy 8's. and even then i do that once or twice a year just to shock the muscles.
I dont know how much i buy into this muscle memory thing. Unless its linked to muscle fiber trauma in some way i dont see how this works out. I mean if i hit 115lb dumbells for chest on tuesday, then on friday I happen to be smashing my 115lb girlfriend, and push her up off of me, are my chest muscles gonna be weaker from that? hell no.
but if your speaking in terms of healing then it makes sense, you hit chest hard and heavey on monday, and because of the trauma your muscle "remember" having to deal with, they repair the fibers stronger then before. Isnt this the basis for all strength training?
I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.