Dig under the membrane in the middle of the rack, insert a finger and pull it all off in one motion. Should strip off up both ends easily without coming apart. Don't use a sharp knife to dig under, if you cut the membrane it makes it much more difficult to pull off.
CMJ - KCBS
CBJ - MBN, NCBS, NCPC, NCBBQA
OBJ - BBQCritic.com
CTC - KCBS
Pitmaster and chef - "4 Lil' Pigs" Competition BBQ Team
Author of "A 'Q' Review"
Lang Hybrid Smoker, BDS, Holland "Epic"