I think you can go in there with a small magnetic retrieval tool. Good luck with it. I dont want to be the one to ask, but how in gods name did that get it there?
And that screw looks like it is aluminum............
You can remove it without taking the nose off. We did the same thing with Mojo's bike, it will work. You need the extendable magnetic tool. Wish I could find the pic.
Found it.