As a sane person, he couldn't reasonably ask Horus to throw himself into the golem's arms without reason. This kind of baseless assumption couldn't be voiced, as it would only lead to tragedy if he was incorrect.
However, in a trial where the literal didn't seem to be the answer, he was forced to trust his view of the figurative.
The answer he came to was not unique to himself. As someone who was living his second lifetime, his perspective on time was completely different from the norm.
Instead, he thought from the perspective of the masses and found the answer that was easiest to reach. He had to start here. Whether he was right or wrong, he would only learn the method to move forward by acting.
"Horus, pulled back!"
Atlas yelled as he charged in towards the tree golem. He extended his chain sickles and slightly tweaked the chains so that their ends wrapped around the being's neck.
The only thing left to do was pull.