By Andrew Goudsward (Reuters) – FTX founder Sam Bankman-Fried, facing mounting legal challenges over the collapse of his cryptocurrency exchange, may have harmed his defense by speaking publicly in recent days, legal experts said. Bankman-Fried has sought to explain the implosion of FTX and disparaged government regulators in posts on Twitter and conversations with reporters. Attorneys said such statements will likely make life more difficult for the defense lawyers seeking to manage fallout from the exchange’s demise and navigate multiple federal investigations. “There’s this old saying that …