At 25,000 miles on a tandem, I don't think that the wheel owes you anything. Especially if you have rim brakes. Yes, you could ride it with a damaged rim, but you'll (a) struggle to get it unnoticeable and (b) increase its risk of failure. It is more likely to be inconvenient than dangerous, but if you have to do it why not do it before you need to?

I'd swap rims. Get another Andra and you could just swap the spokes over.