The hiring scandal at NCUA that is expected to lead to a protracted court battle over a number of demotions and suspencsions will heat up this week when former Executive Director Karl Hoyle, who lost his job over the scandal, has his day in court. Hoyle, who was implicated by the U.S. Office of Personnel Management (OPM, which first investigated the scheme, goes on trial in federal court here on a challenge over his firing by the NCUA board two years ago. Hoyle claims he was illegally fired by the board because as a political appointee, a so-called Schedule C, he could only be ter