unambiguously softstart SEEED GPRS shield

Is there a way to do this? I'm currently using the following code:

 void powerUpOrDown()
  {
    Serial.println("Powering up or down...");
    pinMode(9, OUTPUT); 
    digitalWrite(9,LOW);
    delay(1000);
    digitalWrite(9,HIGH);
    delay(2000);
    digitalWrite(9,LOW);
    delay(3000);
  }

I'm looking for code that turns on the shield but won't turn it off, and vice versa.

Nope, it's a toggle.