Pulling a Quick One
Odin and the rest knew for certain that Alex's senses became duller the longer he stayed active in his broken state, so their main goal was to keep him away from the Quetzalcoatl and make sure he would farm as few points as possible.
They knew that there was the possibility of Alex just snapping and doing what he did to the Corpse eater when he was at the death door.
However, that was something they had no control over, so they reasoned that if he could unleash such strength freely, their chances of winning were none, but at least they would know that they tried their best.
At least, that was the narrative for the world to believe, but in truth, Odin and Ra were tasked with pushing Alex to his limits, leaving him no option but to resort to the same ability he used against the Corpse Eater.