If you are talking about the J-20 mod, that's not what happened.
The team stole Deka's asset for the Jeff which both belongs to Deka and is classified which Deka was granted the permission to use on their module. Deka made two consecutive furious responses because of the team claimed the assets was "original" and denies appropriation despite the obvious. The police fiasco follows and the classification claim was made on the part that Deka made (Which is indeed classified), not the mod itself.
The team omits the first part and only told the English community the second part to win sympathy, which I don't think they deserve.