with a single page pulling the wrong comment form

so I am using this function to have any single post with a certain category (in this instance cat id 122 so it is “single-122.php”) that displays a holiday template :

/*add this in for category specific single post templates*/
add_filter('single_template', create_function('$t', 'foreach( (array) get_the_category() as $cat ) { if ( file_exists(TEMPLATEPATH . "/single-{$cat->term_id}.php") ) return TEMPLATEPATH . "/single-{$cat->term_id}.php"; } return $t;' ));

the problem is that the comment form is loading a form associated with a totally different post. and since these are holiday giveaway posts I have to figure out what is happening asap to fix the problem. is there a way to reset it?