This was obviously a fight where everything was going to be out on the table, and this was one of the moments for one of Athos' rare cards. With his Mind's Eye, he had seen the chakra on the remains about to spread, and the handseals that his golden hues had watched of Saejima's were familiar to him... He knew what was about to come and he had only a moment before he was screwed. His right hand moved to form a single handed seal, one that caused his chakra to flare and his jutsu to immediately take effect.
Behind Athos' back would start to form a mirror made of sheer ice, another small piece forming thirty feet behind Saejima, in the blindspot of his Byakugan. Seeing as physically moving would be out of the question, chakra exploded out the front of Athos, similar to how a Hyuuga would, to send him off his feet and into the mirror that would have formed behind him, allowing him to transfer to the piece within the Edo Tensei's blindspot. Honestly, had things gone as planned, it would have honestly looked like Athos would have failed at trying to escape into the mirror and was turned to nothing.
But, inside the piece of ice in the blind spot Athos had taken care of the restraints and had brought himself to prepare the same jutsu that Saejima had just thrown at him. From the ice would come the blast, shooting out in a speed that matched Saejima's and expanding to a size that would just slightly trump the previously thrown Jinton move. This attack aimed to take the Edo Tensei by surprise coming from no where, and with such little time to fully react, along with it's size the attack aimed to completely obliterate the Edo Tensei where he stood, like he had planned to do to Athos.
(Ice Mirrors)
(Chakra Blast)
(Jinton Attack)