This question (linking to the revision history because… well, that'll be obvious in a sec) was asked with an implied question in the title and an different explicit question in the body. After some comments it became clear there were two questions and I advised the asker to split them. There were already answers to the explicit question.
The asker split the question, but asked the original explicit question in a new question (again a link to the revision history) and changed the old question to be about the unwritten, implicit question of the title, making the answers and comments invalid and incoherent. Worse, the new question had already gotten upvotes (being much better written) and an answer with one upvote.
I didn't want to leave it to become more of a mess, but my only recourse (as a non-admin, and apart from just leaving the mess to be a mess) seemed to be its own kind of messy: I swapped the titles, bodies, and tags of the questions to re-establish the connection between the original explicit question and the answers already given, making the new question be about the original implied question. I also asked the owner of the single answer on the new question to move it to the other by copying and deleting.
So admins and others with interest: Is this how such messes should be handled? Is there a better way, or better tools? Should this be left to admins?