Conditionals are shown when block is inserted via php

I have a form which has a conditional element on a select widget that shows one of three help statements. When the form is first rendered all three statements are hidden. This works properly when viewed as a page or a block, but when the form is rendered with php, none of the three statements is hidden.

I use the following php code to add a webform inline via php:

<?php
  $block = module_invoke('webform', 'block_view', 'client-block-34');
  print render($block['content']);
?>

Is there an alternate php call that I can use so that the conditionals are rendered properly? thanks