Just before former President Donald Trump’s defense team rested in the Manhattan criminal hush money case, their key witness, attorney Robert Costello, endured a cross-examination that legal experts widely considered a complete disaster for Trump’s case. Costello, the former legal adviser to Trump’s ex-attorney Michael Cohen, was brought up to testify that Cohen was lying about Trump’s involvement in the scheme to pay off adult film star Stormy Daniels, which the prosecution argues was effectively a criminal scheme to defraud voters in the 2016 election. But Costello proceeded to cause chaos i…