We were in a similar situation with some JW relatives over the summer. We hadn't been in touch for a long time, but decided that we'd visit with them if that's what they wanted. We didn't tell them what our Spiritual™ situation was (me Inactive™ and Mr Scully was announced as DA'd by the congregation, without having sent a DA letter). As it turned out, our JW relatives were also Inactive™ for over a year.
You may find that you're pleasantly surprised if you just go. He may not be an Elder™ anymore. If it comes up, you can just say "I'm surprised you haven't heard through the grapevine...."