The guy had no lawful duty to call the cops; no lawful duty to not throw the brass in the trash; and certainly no duty to talk to the cops. The attorney his wife called told them not to talk to the cops. Even innocent people should not talk to the cops.
The prosecutor will never get a conviction, and may not even get an indictment. Remember, this is Texas.
He followed the instructions in his hunter safety course and let the game bleed out and expire for no less than a half an hour before attempting to trqck it.