They can also be reheated on a grill, indirectly, or wrapped in foil and stuck in the oven. Adding juice isn't necessary, imo. Once warmed - if in foil or a pan in the oven, say, 10-12 min - they can be unwrapped so as not to oversoften the bark.
Drying out comes from overcooking or over-reheating, i.e., going too long. Remove when just hot and there are no worries.