[nerbert]

Writing a file for this would be quite a job. You can use phpMyAdmin to find all such threads and then delete or edit as necessary.

Go to your thread table and click "Search" at the top of the page then in the page you get after that put in the criterion

LIKE %*%

for the title field.

EDIT: Once you get your results you can double click on the thread title to get a little edit box. Click outside the box to submit.