Not by Germany. The aircraft was never built, even a prototype, by Germany IIRC.
However,
I think I read somewhere that Kurt Tank or some other Focke Wulf high-up moved to Argentina (as many Nazi war criminals did) and built the aircraft under a different name. This is just some kind of random info pulled out of the back of my head, dunno if it's true (probably not)
I believe the MiG 15 was heavily based on this aircraft, perhaps the F86 as well? Soviet and American designs of the early cold war period took a lot of technology and aerodynamic features from captured German jets and designs.
I'd like the Goetha (SP?) flying wing nuclear bomber myself. Stealth technology FTW.