Reheating Pulled Pork Over Campfire

I would just make a foil packet out of it you could heat over coals.

The Vac Bags are rated for submersion in simmering water, you can reheat them that way. You will need a big enough pot though! It needs to be able to float, not touching the sides of the pot.

+1 to the above, or take a larger ziplock bag, put the freezer bag inside it and then fill the ziplog bag with hot water until its heated through. You can massage the pork bag this way to heat it through faster.

Once you freeze it it will lose some moisture, and heating it any other way other than in the freezer bag will take out more moisture leaving it drier than you'd probably like.