Is the husband's statement, "Each of us goes our separate way and on our own path," made three times in writing (not explicit verbal utterance), considered an irrevocable divorce that prevents the spouses from returning to each other?

The phrase "يذهب كل منا لحاله" (each of us goes our own way) is a metaphor for divorce, and if the husband intends divorce by it, then divorce occurs. It is not true that divorce only occurs through an explicit pronouncement. If the husband intended divorce with these metaphors on three separate occasions, then a major irrevocable divorce (baynunah kubra) has occurred, and you are not lawful for him unless you marry another man willingly, and he consummates the marriage with you, and then he divorces you or dies, and your waiting period (iddah) from him ends. We advise you to present this issue to trustworthy scholars in your country.