Don't forget that many airbus procedures are a 1 fits all procedure, 2.04 (flaps / slats jammed procedure) covers all flap settings, if you were in flap 3 then going to full when they jammed, you could do an autoland. However, if you were in a config less than 3 then you would be going against the limitations.
In the above scenario you would have to amend the Vapp by pressing the flap 3 option and also on the overhead panel. Other than that what has changed?
In real life other external factors have to be taken account of i.e. your fuel situation especially considering the extra drag with flaps or slats jammed.
MF