He could attempt to disarm the pillar; it would be difficult, but not impossible, to ground the effect, into the nearby sands, likely obliterating whatever was used for the ground...but it's possible he might know of another use for it.<br/><br/>(DC 26 Arcana: Touching the stone with a magic weapon allows the power of the stone to be transferred to the weapon. He would have seen this done before, with his cult, providing a temporary Shock enchantment... but those were<em>small</em>stones. What this might do is... uncertain.)