I gotta think the ribs were very lean and/or the smoker didn't have enough moisture in it. That being said.. wrapping and letting them cool a little with liquid would have allowed them to pull some of the moisture back in... but we like to err on the side of less done before we wrap to make sure the natural moisture is still inside the ribs. Always better to keep the moisture in rather than to add it back later IMHO. Same with all meats...
4000 sq inch Wood Burner named Brutus - KCSB member/judge# 32129