The Collaborative International Dictionary of English v.0.48:

Disentanglement \Dis`en*tan"gle*ment\, n.
   The act of disentangling or clearing from difficulties.
   --Warton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disentanglement
    n 1: the act of releasing from a snarled or tangled condition
         [syn: unsnarling, untangling, disentanglement,
         extrication]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "disentanglement":
   accomplishment, answer, ascertainment, avulsion, breaking out,
   clearing, clearing up, cracking, cutting out, decipherment,
   decoding, determination, disburdening, disembarrassment,
   disembroilment, disencumbrance, disengagement, disinvolvement,
   dislodgment, distillation, drawing, drawing out, dredging,
   drilling, end, end result, enucleation, eradication, evolvement,
   evulsion, excavation, excision, explanation, expression, exsection,
   extirpation, extraction, extrication, finding, finding-out,
   freeing, interpretation, issue, mining, narrowing, outcome,
   pressing out, pulling, purification, quarrying, reason, refinement,
   releasing, removal, resolution, resolving, result, riddling,
   ripping out, simplification, solution, solving, sorting out,
   squeezing out, streamlining, stripping, stripping down,
   uncluttering, unhampering, unknotting, unraveling, unriddling,
   unrooting, unscrambling, unsnarling, unspinning, untangling,
   untwisting, unweaving, uprooting, upshot, withdrawal, working,
   working-out, wresting out