I'm not a pipeline expert, but I've been doing computers sense the early 90s. You have a pipe. It has pumps and valves. You have a computer that controls it all. The computer gets hacked. UNPLUG THE DAM COMPUTER... and plug in another one. Then restart the pumps. If they are too incompetent to figure out a workaround then get the hell out of the way and let someone else try.
If there is one thing I've learned with computers its that the guy at the console is god. There is no such thing as taking over from a remote location. Anyone that tells you differently has been watching too many movies. Send real actual human beings out the the pumps, unplug the dam computer and just turn the pump on manually. Yeah, a person might have to watch the pressure and flow rates etc rather than the computer. So the hell what. Get the dam gas flowing again morons.
90% of those safety protocols etc is because they run the pipes at high pressure to push the gas through faster etc. So why can't they run it at half capacity with a nice slow steady rate of flow? If the pump is set to 60% you aren't going to pop a seal etc. Yeah, I admit I'm no expert but I find it hard to believe they can't get something going to solve the problem. the only explanation is the bureaucrats don't want the fuel flowing. Its not like someone blow up the physical pipe and it will take weeks to patch it.