I'm going to make a prediction no one wants to hear:
this time next year, there may well be NOONE working on Star Trek books for S&S...
ST fiction has been around at Pocket for nearly three decades, and has weathered economic downturns before. And the new movie is likely to create a new audience for the literature -- which is one of the key reasons why letting Marco go at this time (or at all) makes no sense, but it also means that there's no reason to predict the imminent death of a publishing program that's been around for more than a generation.
Playing devils advocate, the recession already the worst since 1974, before S&S took up Star Trek publishing, and is expected to continue to worsen.