No.
The reason that titles are un-editable isn't tecnical restrictions. It's on purpose.
It's because this takes away the chance of people writing a "yes/no" title, and people answer just yes/no. Then the OP changes the title to "do you like ******" (I didn't think of anything, let's see how dirty your mind is). The answers still stand.
Of course, a "wipe thread" option might come. This allows you to change the title, but erases all comments.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







