Yes .... we have seen this all before ... its also posted on "youtube" somewhere?
I think this clip probably goes back quite a frew years and may have been produced to demonstrate how manouverable the old "Blokow" is for "nap of the earth" type flying .... they were after all developed to be the German Armys most able defence against the low flying Mil 24 "Hind" during the "Cold War" .... WAY more agile than the old Huey.
In fact you don't really understand helicopter agility and control response till you've flown the Bo105 ...... "Even the Birds are Jealous!"