When you click on a gold thread when you're not logged in as a gold member, you get the "Sorry" page. Once you log back in it defaults back to that "Sorry" page instead of the thread you originally clicked on.

I know it's probably difficult/not possible to direct users back to the thread they intended to read, but instead, what if once you log in, it directs you back to the main boards? Might be a little less confusing/one less step.