In theory Yes you can. If the airport/airline "line guards" try to move you tell them your gate changed, or you are meeting someone in a lounge first.

Every once in a while I've had the line dragons tell me I was in another terminal and the gate change has always worked in getting me through. I try to print my boarding pass in advance when the gate has not been assinged yet which is even easier. The C/E tunnel used to be awesome, no NOS and open most of theday. Now it is NOS and only open morning's but still a nice checkpoint.