@ CBE, perhaps the plane came in late and as MUC closes during the night there was a rush to release the plane back to Munich.
I had this moment 15 years back from FRA to MUC. The plane came in very late, it was the last flight to MUC in the evening and the crew was very nervous to start with sufficient flight time to MUC to avoid a landing somewhere else. Normally the flight would have taken 50 minutes but as soon as all passengers were sitting in the plane, the pilot started the engines and rushed towards Munich. He made it possible to make it in 35 minutes - we landed a couple of minutes before MUC was closed. And this time everybody was clapping even in a Lufthansa flight - everybody was happy to be home instead of landing in Nurembourg or flying back to FRA and having another travel by train or bus.
I cannot remember how many people were working around the plane in FRA but it seemed to us - everybody who was able to carry something. :-)