Occasionally users vandalize or sabotage their own question, seemingly out of frustration ("SO doesn't do what I want!"). Usually it doesn't bother me, because those questions aren't high-quality to begin with.
Lately, I've seen this happen a bit more often; the latest example being this question.
Letting it stand as it is, is obviously not a great solution (if the link goes dead, the body currently reads "Pointless Pointless Pointless Pointless Pointless Pointless"). Rolling it back to an earlier version might not be the best course of action, because the OP is probably no longer interested in "maintaining" the question.
Should it just be deleted?
Should it be "salvaged" if we hope the answers might be relevant for others?