Class One. יציאת מצרים actually and as it relates to the ירידת הנשמה למטה happens in stages: It goes from one step to another (downwards) going into the Galus and from one step to another going out of the Galus. Each Geula is a Galus compared to a later Geula, and it continues forever.
Class Two. The questions of the Ma’amar are topped off by the contradiction between the idea that you experience יציאת מצרים in a way that you never forget it, and remembering it, again and again, each day (by day and by night). What you remember is not the freedom but the enslavement which never ends so you always remember the need to go out of Galus again. And you do so each day!
