2013-05-21, 00:43:09
You are only putting a form on 1 page. Then do not use a filter use a hook check if the slug is the one your form is on , and modify content to output your form.
on hook index-pretemplate, check if slug == myformslug
global content
$content = form html
if_post etc.
on hook index-pretemplate, check if slug == myformslug
global content
$content = form html
if_post etc.