He doesn't record the trial. So you need to do some crappy summary of the trial in the HoG forum.
This has been happening for years, I don't think it has ever worked...
If you turn on chat logging in your nwn.ini file you can copy / paste the trial into the forums that way. Just make sure you backup the log as soon as you log out of your session or else it will get overwritten. I usually just rename the file with today's date. Also, you'll want to do a search and replace to get rid of the usernames. It's a bit of a chore doing it that way but it's better than typing out a summary.
9lives is on it. Until then chatlogging is probably for the best as PlayaCharacter notes.