Willian cast his gaze at a spell circle and he decisively cast a spell of his own. What he comprehended from all the things Oz told him was that this array was like an electric circuit, as soon as the flow of current disrupts it malfunctions. In the case of the array. Mana disruption will put it into activation.
To solve a magic spell, you need to cast a counterspell on it. However, he cannot cast so many counterspells and make them activate at the same time to solve this array lock perfectly. So he came up with a solution. This solution was to cover all the connected channels with his mana extraction spells and disconnect the targetted spell circle from the array.