I am using your original URL because it matches the thumb. The reason it didn't work is because "See Labels" was enabled. Going forward please disable labels before obtaining the URL.
By the way you can now submit a BEV URL without doing the copy/paste coordinates thing. For this map you could have submitted the following URL and the submit form page would have accepted it.
http://www.bing.com/maps/?v=2&cp=28.431202742822275~-81.5504758916017&scene=55767626&lvl=1&sty=o
I am using your original URL because it matches the thumb. The reason it didn't work is because "See Labels" was enabled. Going forward please disable labels before obtaining the URL.
http://www.bing.com/maps/?v=2&cp=nr4nq5863q11&scene=55770169&lvl=2&sty=o