Since you don’t have the skill set to do more testing then that is a wise move. Since the tractor won’t start to be driven onto a trailer, even if you find one to borrow, probably having it winched onto a flat bed wrecker will be the way to get it to a service center.
To anyone else reading this who owns an equipment trailer, think about installing a winch on it before you find yourself with a dead tractor or UTV and no way to load it other than recruiting a dozen really strong friends,