Wow really nice buck I hope you get it back wit no further trouble. That said I'm still not following why you would give the rack to the conservation officer for safe keeping? So the game warden know they are yours should be cut and dry. I may be slow but feel like I'm missing something.

Don't give up, get your antlers back.
Then If the jerk tries to get you fired, turn the tables on him and get him out of there.

Your problem is like everyone else I know that has killed big bucks and bragged about it...nothing good comes from it. Next time just shoot it and take it to the taxidermist and get it mounted how you want. Loose lips sink ships. I see deer killed like that every year, but you will never see them on the Internet. And unless you’re in the know, then all you’ll hear are rumors. Pride of a kill has ruined more friendships and landowner relationships that anything else. 130-150“ gets posted some...150”+ never. And these deer are only officially scored under condition of anonymity, just for personal best. Or “best” amongst friends. I won’t even post trapping pics unless I have permission from the manager/landowner.

I gave them to the game warden so they could hold on to them

I had permission to hunt recreationally. I even gave them to the wildlife and fisheries and months later they signed them over to me. I just got off the phone with the assistant DA. Sounds like we're going in the right direction.