Going to MAG 0 isn't the same as not having a Magic attribute, by the way. Once you have a Magic attribute, you always have one. If the maximum hits 0, which can only be done through extensive augmentation, you are effectively treated as mundane, but you can't just Emerge later-- And even if you did, your RES would have a maximum of 0 too, and so you would immediately lose all your technomancer powers.