Vilas, for your info this subject has been on discussion for quite long time now, and
AFAIK many companies do not agree with this "new" recommended recovery procedure for the 320F. Airbus knows about this controversial and I believe they are studying it.
In my current company, there is a recommendation to not use the SB at
very high levels (>350/360) and even at high levels it is recommended to use it with care.
This situation happened to me before and the final result was not brilliant. The use of full SB to a heavy weight 321 caused a small upset and the airspeed decrease was almost negligible.
Good luck.