Hey Gary,
It certainly is possible. You could fetch the Hotspots settings (the hotspot settings is where we hold the category id that is selected for the current page). Then you would have to grab the categories.
$categories = JCategories::getInstance('Hotspots')->get()->getChildren();
You would have to search withinthe categories for the category that you need. Hm, actually. If you already have the selected category you could do:
$category = JCategories::getInstance('Hotspots')->get($catid);
This should return the currently selected category and then you could do $category->description to show the description.
Regards,
Daniel