Broke site with text change by using a /


I tried to change some text in ultimate branding which included a / in the sentence.

I notice elsewhere in the forums that this is the cause of the subsequent error (below), however I am unable to find a solution for how to remove the text change to allow the plugin module to be re-activated.

Currently, I have the error

Warning: preg_replace() [function.preg-replace]: Unknown modifier 'P' in /www/sites/72b/c5b/ on line 377

I have deleted site-wide-text-change.php to allow me to remain operational but need to be able to get it working again for other changes

Thanks guys.