The Collaborative International Dictionary of English v.0.48:

reexplain \reexplain\, re-explain \re-explain\v. t.
   1. To explain or interpret from a different viewpoint. The
      form without the hyphen is more common.

   Syn: reinterpret.
        [WordNet 1.5] re-explore

WordNet (r) 3.0 (2006):

re-explain
    v 1: interpret from a different viewpoint [syn: reinterpret,
         re-explain]