Is the A380 ailerons' kinematic modified in alternate law?
Valse Des Ailerons (Waltz of Ailerons) or VDA is a nickname for the Load Alleviation Function (LAF) which is part of the flight control system. LAF uses all ailerons and spoiler 6 to 8 to alleviate the fatigue and static loads on the wings by reducing the wing bending moment.

It consist of various sub functions dealing with passive load alleviation (based on commanded load factor from normal law) and active load control based on measured accelerations in pylons under the wing. 

From this it already follows that passive load alleviation requires normal law for load factor inputs. 

There is a document circulating on the internet which seems to be an official Airbus Pilot Briefing for A380 pilots called "Flight Deck and Systems Briefing for pilots, issue 2". In the section about the Flight Control Systems under auxiliary system the following is said about the LAF:


  
  Load Alleviation Function (LAF) The objective of the LAF is to reduce structure fatigue and static loads on the wing during maneuvers
  and turbulence. Spoilers 6 to 8 and all the ailerons are involved
  in the LAF.
  The LAF is available in normal law only.
  


(Emphasis added by me)

So your feeling that Valse des Ailerons is only active in Normal Law is correct.



Update: Based on the A380 flight crew manual, it depends—