ForeverAlone: I was thinking that they could hire Croatian lawyers to try to counteract what LE's lawyers are possibly doing unchallenged by any defense representation.
I don't think they need to. Keep in mind that, since this is a criminal case, the local prosecutor must determine if he will allocate resources towards a case that will go nowhere. Getting judgments in a case like this is meaningless to the court and to the local jurisdiction. At best, they might rubber-stamp a piece of paper with no intent of following up, because they have limited resources and are not in the habit of indulging every idiot with a hang-up and a social media presence.