Looks like one-way business class fares on that itinerary in August are $3-4k on AF, and ~$4.5k on DL metal. Currently, round-trips are pricing at about $4.5-5k (on DL metal TATL) depending on travel dates, of course that could be more (or less) than you paid. So there's a possibility of getting ~$1,500 back if you rebook on the cheaper one-way options.
I'd move quickly, closer to travel those one-way fares will shoot up significantly and then your best bet is to just let the return expire (or hope for a significant cancelation/delay, for which you can get a refund to original form of payment of the half-round trip fare).