I checked out the google maps and it looks like the sign that Sam is talking about, and the one I found, down the cart path from his are just 2 of many, all signs basically saying "Please GOlf Patrons Only Beyond This Point" or something or other...But I do not think either are the signs that Sam first saw off the tee. I you pan out from the green where the 16 Beacher sign is, there is another road sign (like the aforementioned ones across the road from the burm I would guess Scott was on..so...sign is a noting burger...imo
Below is the road signs, the green with the 16 Beacher and the last one shows to the right another road sign..that is the one I think Sam was first seeing...maybe...
The first pic is the sign to the far left of the green, left of the cart path
Note, the signs down the side of road..
This is the 15th green, 16 Beacher sign to left and the sign I think Sam was first seeing is to right side along the path
If I am correct, then neither sign was moved.