In June 21 451 AD following the inconclusive battle of Catalaunian Fields the previus day Attila was trapped in his camp waiting for the Romans to approach the Visigoths searched for their missing king and his son Thorismund. After a long search, they found Theodoric's body beneath a mound of corpses and bore him away with heroic songs in sight of the enemy. Upon learning of his father's death, Thorismund wanted to assault Attila's camp, but Aetius dissuaded him. According to Jordanes, Aetius feared that if the Huns were completely destroyed, the Visigoths would break off their allegiance to the Roman Empire and become an even graver threat. So Aetius convinced Thorismund to quickly return home and secure the throne for himself, before his brothers could. Otherwise, civil war would ensue among the Visigoths. WI Aetius took a risk that day by allowing Thorismund to annihilate Attila while on the same time attempting to raise a civil war amongst the Visigoths in order to weaken them?
How is this altering History? Could the annihilation of Attila and a potential Visigothic civil war revive the dying Western Roman Empire?