It's possible to "null" it by providing an intermediate site with all the elements (and legit licence) that would act like a proxy for all the users of nulled plugins. OxyNinja, OxyMade, and any other elements-based plugin may be circumvented like that. Not sure about
Asura-based auth, but normal Oxygen elements import check is easy to hack into via man-in-the-middle method.
I've outlined the course of action in my
March 5th post (under last quote).
@promowp was nice enough to immidiately agree to go on with providing the licenced source, but I have no time to implement this (not using Oxy for a while myself). If you, however, want to build on that plan, I'll be happy to answer specific questions on implementation.
Alternatively, there's a manual method of copy-pasting the elements as explained by
@Drewcifer in his
March 20th post
OxyNinja 3.3.1 clean by
@locomotii