NBO Analysis

Hello CCLers!
 I have done a NBO analysis of a transition structure were a sigma bond is
 being broken. The problem arises when check the orbital structure, there
 is still a pi bond where the sigma bond is already broken. Could it mean
 there is a certain aromaticity in that TS and pi electrons are still
 creating a "current" despite of the big bond distances. Is there any
 point of view (with chemistry sense, not mathematical formulation of
 anything non graspable)?
    Carlos Silva López
  Dpto. Química Orgánica
   Universidade de Vigo
 Phone num: 0034 986812226