Liminality might be a good concept to use for shamanism in a more general sense than intellectual shamanism. In fact perfect. But for intellectual shamanism, I think we want to avoid anything too teleological, because although there might be dissolution, one is not necessarily guaranteed anything beyond this. That’s why I use the word “dissolution” rather than liminality. Things dissolve down. Then things are possiblly restored. Modernity has no rituals to assure this outcome, so we ought not to speak as if we expect things to go according to a prior pattern.