Haha! Love me some Steve P...
Ok, so pulled, marinated pork that goes in tacos is generally pork butt. Lots of fat there. It will sit in a steam table throughout service. Now Lord forbid someone forgets to keep the water refreshed in the well. It happens. Then the water evaporates out of the pork itself, coming into direct contact with heat.
It's a simple fix- just add water and stir. Tada! The spices and lipids have only intensified- they don't evaporate.
This isn't competition BBQ, they probably aren't using a smoker for this. It's a braised application.
Sound about right?