That's just it - under Belgian law, there is effectively no difference between "You're fired" and "Let's agree to move on in 3 months" - they are the same thing because the law requires the latter.
You can couch it in all the touchy-feely-corporate-PR speak you want, but a firing is a firing.
You can couch it in all the touchy-feely-corporate-PR speak you want, but a firing is a firing.