Ahh...no. You will get a foul called if you extend your arms and PUSH or Charge in a reckless or careless manner. Extending your arms is not a foul. Having officiated more college games then most people see in their lifetime I see defenders place their hands on the backs of opponents all the time, or shield using their arms. Its almost never called.
But that is not the issue. If you are up by a goal with 5 minutes left and you don't win, shame on you. You can't end a game. If you don't have the skill to keep possession of the ball, then ball should be into touch all the time. That's poor coaching.
