This could be solved by replacing the protection (I think solutions like that are rather common, mechanically move the flat transparent screen) or by just switching to another camera.
Are you actually familiar with how reentry causes deposition from a melting fin onto the lens of a camera.
I'm genuinely shocked by how you are wording your comments, but that may just be your writing style. Anything of the form of "could be solved..." it kind of ridiculous because the circumstances just happened for the first time yesterday. This isn't like the motorsports cameras that spin the lens or transparent protection 360 degrees to wipe off buildup.
