[Admin]

No need in disabling HTML.

In functions.php find

PHP Code:

  if(!$dohtml)  { // kill any rogue html code
    // $bbcode=str_replace("&","&",$bbcode);
    $bbcode=str_replace("<","<",$bbcode);
    $bbcode=str_replace(">",">",$bbcode);
    $bbcode=str_replace("<","&lt;",$bbcode);
    $bbcode=str_replace(">","&gt;",$bbcode);
  } 


And below add

PHP Code:

  $bbcode=str_replace("<FLASHCODE>","&lt;FLASHCODE&gt;",$bbcode); 


But replace FLASHCODE with the code that calls in the movie.