It DOES destroy the Spirit Energy. The field doesn't destroy the one in the spirit plane. The fluid does. As the field doesn't destroy the spirit in the spirit plane, it does NOT kill the person. As the fluid DOES destroy the spirit in the spirit plane, it DOES kill the person.
And don't take it literally and say that this defies the conservation laws. One, it merely breaks it apart and such, and two, spirits do break of the law of conservation of energy by just being created in the first place.
Since this is SF-only technology, you need to be a pretty big threat to the Aralangs. Plus, the SF has to have interest in arresting you and put you through this process, rather than just killing you straightforward, which rarely happens, unless you keep resurrecting from the dead. That might either make them use Unstable Saraton Energy on you, or put ASEF in you. USE would only be used for events only, or if it's not an event, it has to be like, a one-time thing, for example my Sajuuk blowing up while it's charging its cannons. But yeah.