DirecTV pitchman Rob Lowe's clueless alter ego, "Poor Decision-Making Rob Lowe," makes all sorts of bad choices.In recent advertising for the nation's largest provider of satellite television services, the character lets shady strangers borrow his car, gets his name tattooed on his forehead and eats food he finds on public transportation. He also has cable TV.According to the Federal Trade Commission, however, the hapless alter ego's decision to stick with cable might not be so bad after all.The FTC …