Looking at Saruman's helpless expression and eventual surrender, Allen suddenly felt a sense of unreality. Prying the Palantír Stone out of his hands had been far too easy.
After all, Saruman's ultimate fate had been inextricably linked to the Palantír Stone kept in Orthanc.
Allen knew that Maiar who left Valinor and had their wisdom clouded could also be influenced by fear, jealousy, envy, and other emotions. With his wisdom obscured, it was hardly surprising that Saruman had been corrupted after using the stone to communicate with Sauron for so long. Sauron had an extraordinary talent for such things. Ar-Pharazôn, still buried in the Forgotten Caves, and Celebrimbor, shot dead by a hail of arrows, had both learned that all too well.
In the original course of events, after being corrupted, Saruman had not only accepted the allegiance of the Half-orcs of the Misty Mountains, but also used humans and Half-orcs to experiment with creating Uruk-hai. He had stopped at nothing to increase his strength.
At the time, his plan had been to feign cooperation with Sauron and conquer the world together, with the ultimate goal of overthrowing Sauron and becoming the next Dark Lord himself.
The White Wizard of the present, however, was merely obsessed with strength and growing enthusiastic about power. His original intention in doing these things had been to oppose Sauron and hold his head high before the great and powerful, especially the Valar. His ultimate goal was to prove his own ability.
Naturally, these two ways of thinking would lead to vastly different outcomes. Allen did not know whether Saruman, deprived of the Palantír Stone, would still meet the same miserable end. With his current strength, he certainly could not forcibly change a Wizard's fate.
One reason Allen had exposed the matter of the Palantír