LJ crossposter Ultimate Tag Warrior?

I’m looking for a way to get the Livejournal Crossposter to send the Ultimate Tag Warrior generated tags to LJ, rather than pulling the categories to use as tags.

I e-mailed the author of the LJ Crossposter, but as he is busy he was only able to give me the following code (provided by a third party) to work with:
[code]
// ******** <TAGS CODE>

// this should be an option at some point, for now i set it to 1
$utw_enabled = 1;

if($utw_enabled){
// get the post tags
$tags = $utw->GetTagsForPost($post_id);

// we get a table of objects, let's make an array of strings
$alltags = array();
if ($tags) {
foreach($tags as $tag) {
$alltags[] = $tag->tag;
}
}

// and break it into a comma-seperated list
$tags_string = implode(", ", $alltags);
}
// ********* </TAGS CODE>

then i do $args[props][taglist] = $tags_string; , because i don't use Categories at all
[/code]
I myself am not too good with tinkering with PHP, beyond little things, and am not sure how to integrate this bit of coding into the LJ Crossposter.

Suggestions?