have you already tried to re-categorize the website yourself on the web gateway? Might be a workaround for you while the site is under review by the trustedsource team.
To do this you can go to "Policy -> Settings -> URL Filter -> Default", here you can add a new list to overwrite the categories.
I am pretty sure the redirect based on the category should just work fine then even though it's just a workaround no solution..
Oh I just went ahead and wrote it into the rule. That's the habit I got into before I learned about that feature, and so now I keep forgetting about that feature. The nice thing about that feature though, is that you can grant permissions on those lists for others to manage rather than having to go at it with admin rights.