Just gonna state my opinion here.
I don't think Gaga intentionally went out to "redo" "copy" or whatever "Express Yourself". It just so happened to have similarities. Maybe subconsciously she remembered the song and used it for "Born This Way" (without realizing the similarities, just thought it sounded good).
White Shadow needs to hold us tongue. He doesn't have enough credibility or relevance to be blasting people on Twitter. I'm sure Gaga isn't impressed. I wouldn't count on seeing him on album #3.