Since the edge counts normally:
The blade adjacent to the front corner (i.e. the "front half" of the flank edge) fights. Is is in close combat with the flank edge of the WWg so the WWg gets a -1 combat factor for enemy in close combat with its flank.
The other blade has not met the criteria for moving into close combat against a flank edge, therefore does not fight. However, if the first blade recoils or is destroyed, it will adjust its contact by sliding 80p to contact the "front half" of the flank edge. It will fight in the following bound.
If the WWg just loses, nothing happens. If the WWg scores half or less, it is destroyed.