I guess even if you knew the neighbors were not going to let you go recover the deer you probably should have done something. Let the neighbors know what happened and where the deer was so that they could have tagged the deer if they wanted to. Yes, it would suck but better than see a deer go to waste. Or call the game wardens and see what your options are. Maybe he/she would go talk to the other properety owners or help you recover your deer. You should have done something before it was too late. So you finally decide to trespass? If you were going to go that route you should have done it sooner.