If the solutions had nothing to do with an IP address, I believe it would be ok to turn the title itself into representing that it was a twitter related problem.
I am against redrawing the Question itself to suit answers it may receive, that type of thing could lead to more answers that are "stock" answers for specific issues.
Remaking a question to fit the answers also tosses out the possibility that the Original question has a much better answer, than the ones that are there.
If the question is redone into some stock question for a stock answer, it totally misses the chance to have an answer that is very specific to the specific whole problem of the question.
If it turns out that Changing the IP was the solution to the whole problem, not just what it says in the title. I would be ok with it becomming the ONE true "change your IP" question.
Titles are not questions, although they should represent the question. The users title could have represented the question better.
Other stuff: Odd ways of talking, strange titles, different ways of saying the same thing, and different ways to answer improve the chances of some person finding information on superuser.
Not everyone searches with the correct technical terms, or even knows what to search for.