Hasta La Motion!

Alright this one is quite tricky and since there is NO final solution for such a thing I thought we just share ideas and collect suggestions in this thread so others can look at the ideas and it might help.

So in my case I have to remove an unwanted shadow (camera shadow) which first moves around on the floor (while the camera is rotating around a car so there is NO static floor) and then the camera shadow touches the car and moves around on the surface of the car.
I personally have no REAL idea how to fix this and it’s frustrating as hell.

Any ideas welcome.

For anybody who wants to remove something in a static background: Just hold one frame (freeze frame) and remove the object with the paint node (clone) and then if say a character is overlapping this area just mask it, easy as pie.