This was to be Harald's final battle, taking two more Ceorls lives before falling to a grievous strike.
Yes, it would have been prudent for the warrior king to have returned to his Varangians and laid claim to certain victory, or wait for his Bondi to join him, but that's not what sagas are written about. A sure path to Valhalla for a mighty warrior, fallen in glorious battle.
Both sides had proxie banners, but they were never used. SAGA dice were used for SAGA abilities.