OK, Tomos has a mechanism to force you through the short link URL, but once you've hit it then you can go manually to the next page.

First click the "Get Event" link to get to... http://klondikeunderground.xyz/VirtualPub/getevent.php
then go to http://klondikeunderground.xyz/VirtualPub/event.php

It will only work when the event timer has finished so you can't trigger it early.