data-mm-id=”_n5sobzk85″>After Sunday's 28-21 loss to the Pittsburgh Steelers, the Houston Texans have to answer one simple question: why is Bill O'Brien still employed? The Texans are now 0-3 after blowing a 21-17 fourth quarter lead this week. That loss followed back-to-back embarrassing showings against the Kansas City Chiefs and Baltimore Ravens. After a massive playoff collapse last season and a tumultuous offseason, there is absolutely no reason for O'Brien to still be the team's head coach — and there's even less reason for him to remain the franchise's general manager. O'Brien is in his seventh season as the head coach in Houston. Despite a loaded roster and a weak division, he's never gone beyond the Divisional Round of the playoffs. His…