The Collaborative International Dictionary of English v.0.48:

Disarticulate \Dis`ar*tic"u*late\, v. t.
   To sunder; to separate, as joints. -- Dis`ar*tic`u*la"tion,
   n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disarticulate
    v 1: separate at the joints; "disjoint the chicken before
         cooking it" [syn: disjoint, disarticulate]

Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "disarticulate":
   abrupt, alienate, cast off, cast out, cut adrift, cut off, cut out,
   delete, depart, disarrange, disconnect, disengage, disjoin,
   disjoint, dislocate, displace, dissociate, disunite, divide,
   divorce, eject, estrange, expel, isolate, leave, luxate, part,
   pull away, pull back, pull out, segregate, separate, sequester,
   set apart, set aside, shut off, split, stand aloof, stand apart,
   stand aside, step aside, subtract, throw off, throw out, uncouple,
   unhinge, unjoint, unseat, unyoke, withdraw