Boomboxey said:If you didn't get to validate your Kombat Pass before the outage, and ran out the trial. Highlight Online, and as soon as you click X to access online, pull out your ethernet cable/modem. The trial will be back. You will have to do it each time you play online. Sorry if this was posted before.
After a couple of attempts, I can confirm this worked.
Full credit to Boomboxey of ps3trophies.org
Video (from youtube user McMojoz)