The Lancaster most certainly did return to Germany.
When I was at Laarbruch 80-83, there was a birthday celebration for the junior Bucc sqn...XV who at the time claimed to be one of the oldest if not the eldest squadron having roots before 1915.
No-one really cared in those days of multitudes of stations and aircraft. Inter squadron rivalry was important, especially in those heady days twixt XV and The Saints.
For XVs big birthday bash, they had a Victor (which were previously flown) lots of flying from RAFG Buccs, Phantoms and a GR3 which took off on the taxiway outside the sqn site. But the star was the Lancaster ( also previously flown during the war) on the ground and in the air. It came across from UK with a 125, that may have belonged to 32, for navigation purposes and was the first time a Lancaster had been back. Apparently the sound evoked memories from within Holland and Germany!
I do have some grainy colour photos of the occasion which I should really "modernise"