Fanfic Advice?

Here's the thing...

I started writing a fanficcy thing expecting it to be short and sweet and whatever. I gave it a cutesy title based on the first few sections and posted it as it was written and now I've run into a dilemma.

Me, being me, went completely off road with the fic and now there's plot and intrigue on the way and it looks like it it's going to be maybe a little sprawling and the title might not be that appropriate anymore. Should I end little ficcy at a fitting spot and carry on with the plot and the intrigue in a new fic, or just go for it and let the crazy happen?

Any suggestions?