Speaking like Odine does not make people more likely to believe, or more inclined to read, your posts.

It is believed zat it vas the extreme magics of Sorceress Rinoa zat kept him alive after zee shard of ice pierced him and zee subsequent other mysterious black out.
Rinoa was not a sorceress at the time of his first stabbing.

Given that he was stabbed in a non vital spot, that people have actually lived through much worse, that Selphie was using Curatives to try and heal Zell in the prison (out of battle, so not using battle mechanics), that Squall also thought they would be of use in pitched battle, Squall living and being healed by whatever means seems more than probable.