Order's plan was simple and also possible evidence that it had indeed become corrupted and from what Hal could see in its memories, even Order did not deny this narrative...
If anything, it sunk even deeper into it... Sunk deeper into the idea of gaining power through degeneracy...
The plan was to actively take a part of Chaos and use it to its advantage...
In power, the concepts of Order and Chaos are fairly equal but Order is more peaceful and less aggressive than Chaos in temperament, and in a bid to become much more powerful than Chaos when their next battle rolled closer, Order decided that synthesizing a bit of Chaos into its entire make-up would surely strengthen it.
Suddenly, Hal was no longer swimming aimlessly through memories and was suddenly inside the body of the monk (or at least the apparition of the monk within the memories).