I could be wrong about everything here, but .............
I don't think you can use in_array() in a conditional, so try
Code:
<vb:if condition="($foruminfo[forumid]==1 OR $foruminfo[forumid]==2) AND $bbuserinfo[userid])>
I don't think any of the usual variables are available in bb code, but if $bbuserinfo is available maybe I'm wrong.
You might try
$vbulletin->foruminfo[forumid] instead of $foruminfo[forumid] and likewise $vbulletin->bbuserinfo[userid], and see if that helps.