That stance does seem to be what that outcome would entail and from there you have basically two options. NI chooses to reunify with ireland and you maybe get some version of the troubles pop up or you put up a hard barrier and for sure get the troubles again.
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Ah yes option three turn NI into a gigantic smuggling location where you can freely bypass any custom/immigration laws. The problem for even this option is the DUP does not seem very in favor of it and if the torys lose them any no confidence measure likely passes easily and that just makes this mess even messier.