Originally Posted by
DeltaNYC
Sounds like you have to do a mileage run. You can take a trip to CPH this weekend (Sat out, Sun return) for EUR200 all-in. Not dirt cheap but may be worth it to keep status.
If you have no time to travel, you can take for about 100 euros a Stuttgart-Francfort "flight" (operated by Deutsche Bahn) on Lufthsansa website.
As it is a train, there's no need to effectively "fly" the leg.